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Finding the Fourth Proportional to 447,713.70, 671,570.55 and 402,612.90

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Solution

The fourth proportional to 447,713.70, 671,570.55 and 402,612.90 is: 603,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,713.70 : 671,570.55 = 402,612.90 : x
  2. Step 2: Convert to fraction form
    447,713.70/671,570.55 = 402,612.90/x
  3. Step 3: Cross multiply
    447,713.70x = 671,570.55 × 402,612.90
  4. Step 4: Simplify right side
    447,713.70x = 270,382,966,690.10
  5. Step 5: Solve for x
    x = 270,382,966,690.10/447,713.70
  6. Step 6: Final answer
    x = 603,919.35

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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.