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Finding the Fourth Proportional to 498,570.71, 687,200.33 and 353,190.21

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Solution

The fourth proportional to 498,570.71, 687,200.33 and 353,190.21 is: 486,816.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,570.71 : 687,200.33 = 353,190.21 : x
  2. Step 2: Convert to fraction form
    498,570.71/687,200.33 = 353,190.21/x
  3. Step 3: Cross multiply
    498,570.71x = 687,200.33 × 353,190.21
  4. Step 4: Simplify right side
    498,570.71x = 242,712,427,098.82
  5. Step 5: Solve for x
    x = 242,712,427,098.82/498,570.71
  6. Step 6: Final answer
    x = 486,816.46

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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.