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Finding the Fourth Proportional to 657,704.80, 986,557.20 and 373,285.45

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Solution

The fourth proportional to 657,704.80, 986,557.20 and 373,285.45 is: 559,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,704.80 : 986,557.20 = 373,285.45 : x
  2. Step 2: Convert to fraction form
    657,704.80/986,557.20 = 373,285.45/x
  3. Step 3: Cross multiply
    657,704.80x = 986,557.20 × 373,285.45
  4. Step 4: Simplify right side
    657,704.80x = 368,267,448,352.74
  5. Step 5: Solve for x
    x = 368,267,448,352.74/657,704.80
  6. Step 6: Final answer
    x = 559,928.18

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Double scale
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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.