Home / 1,385,610.40-2,078,415.60-912,829.60

Finding the Fourth Proportional to 1,385,610.40, 2,078,415.60 and 912,829.60

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Solution

The fourth proportional to 1,385,610.40, 2,078,415.60 and 912,829.60 is: 1,369,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,610.40 : 2,078,415.60 = 912,829.60 : x
  2. Step 2: Convert to fraction form
    1,385,610.40/2,078,415.60 = 912,829.60/x
  3. Step 3: Cross multiply
    1,385,610.40x = 2,078,415.60 × 912,829.60
  4. Step 4: Simplify right side
    1,385,610.40x = 1,897,239,280,781.76
  5. Step 5: Solve for x
    x = 1,897,239,280,781.76/1,385,610.40
  6. Step 6: Final answer
    x = 1,369,244.40

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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.