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Finding the Fourth Proportional to 478,511.80, 716,585.92 and 356,640.16

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Solution

The fourth proportional to 478,511.80, 716,585.92 and 356,640.16 is: 534,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,511.80 : 716,585.92 = 356,640.16 : x
  2. Step 2: Convert to fraction form
    478,511.80/716,585.92 = 356,640.16/x
  3. Step 3: Cross multiply
    478,511.80x = 716,585.92 × 356,640.16
  4. Step 4: Simplify right side
    478,511.80x = 255,563,317,162.55
  5. Step 5: Solve for x
    x = 255,563,317,162.55/478,511.80
  6. Step 6: Final answer
    x = 534,079.45

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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.