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Finding the Fourth Proportional to 526,877.40, 790,316.10 and 421,901.40

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Solution

The fourth proportional to 526,877.40, 790,316.10 and 421,901.40 is: 632,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,877.40 : 790,316.10 = 421,901.40 : x
  2. Step 2: Convert to fraction form
    526,877.40/790,316.10 = 421,901.40/x
  3. Step 3: Cross multiply
    526,877.40x = 790,316.10 × 421,901.40
  4. Step 4: Simplify right side
    526,877.40x = 333,435,469,032.54
  5. Step 5: Solve for x
    x = 333,435,469,032.54/526,877.40
  6. Step 6: Final answer
    x = 632,852.10

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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.