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Finding the Fourth Proportional to 479,587.20, 715,663.20 and 396,643.20

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Solution

The fourth proportional to 479,587.20, 715,663.20 and 396,643.20 is: 591,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,587.20 : 715,663.20 = 396,643.20 : x
  2. Step 2: Convert to fraction form
    479,587.20/715,663.20 = 396,643.20/x
  3. Step 3: Cross multiply
    479,587.20x = 715,663.20 × 396,643.20
  4. Step 4: Simplify right side
    479,587.20x = 283,862,941,770.24
  5. Step 5: Solve for x
    x = 283,862,941,770.24/479,587.20
  6. Step 6: Final answer
    x = 591,890.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.