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Finding the Fourth Proportional to 553,703.40, 762,462.18 and 513,513.90

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Solution

The fourth proportional to 553,703.40, 762,462.18 and 513,513.90 is: 707,120.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,703.40 : 762,462.18 = 513,513.90 : x
  2. Step 2: Convert to fraction form
    553,703.40/762,462.18 = 513,513.90/x
  3. Step 3: Cross multiply
    553,703.40x = 762,462.18 × 513,513.90
  4. Step 4: Simplify right side
    553,703.40x = 391,534,927,654.30
  5. Step 5: Solve for x
    x = 391,534,927,654.30/553,703.40
  6. Step 6: Final answer
    x = 707,120.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.