Home / 747,713.40-1,121,570.10-665,044.80

Finding the Fourth Proportional to 747,713.40, 1,121,570.10 and 665,044.80

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Solution

The fourth proportional to 747,713.40, 1,121,570.10 and 665,044.80 is: 997,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,713.40 : 1,121,570.10 = 665,044.80 : x
  2. Step 2: Convert to fraction form
    747,713.40/1,121,570.10 = 665,044.80/x
  3. Step 3: Cross multiply
    747,713.40x = 1,121,570.10 × 665,044.80
  4. Step 4: Simplify right side
    747,713.40x = 745,894,362,840.48
  5. Step 5: Solve for x
    x = 745,894,362,840.48/747,713.40
  6. Step 6: Final answer
    x = 997,567.20

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Double scale
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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.