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Finding the Fourth Proportional to 534,760.40, 802,140.60 and 429,784.40

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Solution

The fourth proportional to 534,760.40, 802,140.60 and 429,784.40 is: 644,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,760.40 : 802,140.60 = 429,784.40 : x
  2. Step 2: Convert to fraction form
    534,760.40/802,140.60 = 429,784.40/x
  3. Step 3: Cross multiply
    534,760.40x = 802,140.60 × 429,784.40
  4. Step 4: Simplify right side
    534,760.40x = 344,747,516,486.64
  5. Step 5: Solve for x
    x = 344,747,516,486.64/534,760.40
  6. Step 6: Final answer
    x = 644,676.60

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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.