Home / 747,669.40-1,121,504.10-665,000.80

Finding the Fourth Proportional to 747,669.40, 1,121,504.10 and 665,000.80

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Solution

The fourth proportional to 747,669.40, 1,121,504.10 and 665,000.80 is: 997,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,669.40 : 1,121,504.10 = 665,000.80 : x
  2. Step 2: Convert to fraction form
    747,669.40/1,121,504.10 = 665,000.80/x
  3. Step 3: Cross multiply
    747,669.40x = 1,121,504.10 × 665,000.80
  4. Step 4: Simplify right side
    747,669.40x = 745,801,123,703.28
  5. Step 5: Solve for x
    x = 745,801,123,703.28/747,669.40
  6. Step 6: Final answer
    x = 997,501.20

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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.