Home / 28,429,881,431.40-42,644,822,147.10-20,164,910,999.40

Finding the Fourth Proportional to 28,429,881,431.40, 42,644,822,147.10 and 20,164,910,999.40

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Solution

The fourth proportional to 28,429,881,431.40, 42,644,822,147.10 and 20,164,910,999.40 is: 30,247,366,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429,881,431.40 : 42,644,822,147.10 = 20,164,910,999.40 : x
  2. Step 2: Convert to fraction form
    28,429,881,431.40/42,644,822,147.10 = 20,164,910,999.40/x
  3. Step 3: Cross multiply
    28,429,881,431.40x = 42,644,822,147.10 × 20,164,910,999.40
  4. Step 4: Simplify right side
    28,429,881,431.40x = 859,929,043,181,513,605,120
  5. Step 5: Solve for x
    x = 859,929,043,181,513,605,120/28,429,881,431.40
  6. Step 6: Final answer
    x = 30,247,366,499.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.