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Finding the Fourth Proportional to 576,111.20, 862,417.20 and 513,125.60

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Solution

The fourth proportional to 576,111.20, 862,417.20 and 513,125.60 is: 768,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,111.20 : 862,417.20 = 513,125.60 : x
  2. Step 2: Convert to fraction form
    576,111.20/862,417.20 = 513,125.60/x
  3. Step 3: Cross multiply
    576,111.20x = 862,417.20 × 513,125.60
  4. Step 4: Simplify right side
    576,111.20x = 442,528,343,200.32
  5. Step 5: Solve for x
    x = 442,528,343,200.32/576,111.20
  6. Step 6: Final answer
    x = 768,130.08

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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.