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Finding the Fourth Proportional to 657,607.80, 918,551.40 and 657,607.80

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Solution

The fourth proportional to 657,607.80, 918,551.40 and 657,607.80 is: 918,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,607.80 : 918,551.40 = 657,607.80 : x
  2. Step 2: Convert to fraction form
    657,607.80/918,551.40 = 657,607.80/x
  3. Step 3: Cross multiply
    657,607.80x = 918,551.40 × 657,607.80
  4. Step 4: Simplify right side
    657,607.80x = 604,046,565,340.92
  5. Step 5: Solve for x
    x = 604,046,565,340.92/657,607.80
  6. Step 6: Final answer
    x = 918,551.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.