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Finding the Fourth Proportional to 519,732.06, 717,918.58 and 418,140.24

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Solution

The fourth proportional to 519,732.06, 717,918.58 and 418,140.24 is: 577,587.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,732.06 : 717,918.58 = 418,140.24 : x
  2. Step 2: Convert to fraction form
    519,732.06/717,918.58 = 418,140.24/x
  3. Step 3: Cross multiply
    519,732.06x = 717,918.58 × 418,140.24
  4. Step 4: Simplify right side
    519,732.06x = 300,190,647,341.66
  5. Step 5: Solve for x
    x = 300,190,647,341.66/519,732.06
  6. Step 6: Final answer
    x = 577,587.32

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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.