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Finding the Fourth Proportional to 577,319.40, 865,979.10 and 292,900.05

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Solution

The fourth proportional to 577,319.40, 865,979.10 and 292,900.05 is: 439,350.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,319.40 : 865,979.10 = 292,900.05 : x
  2. Step 2: Convert to fraction form
    577,319.40/865,979.10 = 292,900.05/x
  3. Step 3: Cross multiply
    577,319.40x = 865,979.10 × 292,900.05
  4. Step 4: Simplify right side
    577,319.40x = 253,645,321,688.96
  5. Step 5: Solve for x
    x = 253,645,321,688.96/577,319.40
  6. Step 6: Final answer
    x = 439,350.08

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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.