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Finding the Fourth Proportional to 457,681.80, 686,522.70 and 317,713.80

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Solution

The fourth proportional to 457,681.80, 686,522.70 and 317,713.80 is: 476,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,681.80 : 686,522.70 = 317,713.80 : x
  2. Step 2: Convert to fraction form
    457,681.80/686,522.70 = 317,713.80/x
  3. Step 3: Cross multiply
    457,681.80x = 686,522.70 × 317,713.80
  4. Step 4: Simplify right side
    457,681.80x = 218,117,735,803.26
  5. Step 5: Solve for x
    x = 218,117,735,803.26/457,681.80
  6. Step 6: Final answer
    x = 476,570.70

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Similar ratio
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1.5x scale

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.