Home / 745,542.60-1,118,313.90-687,805.80

Finding the Fourth Proportional to 745,542.60, 1,118,313.90 and 687,805.80

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Solution

The fourth proportional to 745,542.60, 1,118,313.90 and 687,805.80 is: 1,031,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,542.60 : 1,118,313.90 = 687,805.80 : x
  2. Step 2: Convert to fraction form
    745,542.60/1,118,313.90 = 687,805.80/x
  3. Step 3: Cross multiply
    745,542.60x = 1,118,313.90 × 687,805.80
  4. Step 4: Simplify right side
    745,542.60x = 769,182,786,640.62
  5. Step 5: Solve for x
    x = 769,182,786,640.62/745,542.60
  6. Step 6: Final answer
    x = 1,031,708.70

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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.