Home / 747,667.90-1,121,501.85-664,999.30

Finding the Fourth Proportional to 747,667.90, 1,121,501.85 and 664,999.30

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Solution

The fourth proportional to 747,667.90, 1,121,501.85 and 664,999.30 is: 997,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,667.90 : 1,121,501.85 = 664,999.30 : x
  2. Step 2: Convert to fraction form
    747,667.90/1,121,501.85 = 664,999.30/x
  3. Step 3: Cross multiply
    747,667.90x = 1,121,501.85 × 664,999.30
  4. Step 4: Simplify right side
    747,667.90x = 745,797,945,198.71
  5. Step 5: Solve for x
    x = 745,797,945,198.71/747,667.90
  6. Step 6: Final answer
    x = 997,498.95

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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.