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Finding the Fourth Proportional to 534,813.40, 802,220.10 and 429,837.40

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Solution

The fourth proportional to 534,813.40, 802,220.10 and 429,837.40 is: 644,756.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,813.40 : 802,220.10 = 429,837.40 : x
  2. Step 2: Convert to fraction form
    534,813.40/802,220.10 = 429,837.40/x
  3. Step 3: Cross multiply
    534,813.40x = 802,220.10 × 429,837.40
  4. Step 4: Simplify right side
    534,813.40x = 344,824,202,011.74
  5. Step 5: Solve for x
    x = 344,824,202,011.74/534,813.40
  6. Step 6: Final answer
    x = 644,756.10

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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.