Home / 986,545.20-1,480,206.60-387,404.40

Finding the Fourth Proportional to 986,545.20, 1,480,206.60 and 387,404.40

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Solution

The fourth proportional to 986,545.20, 1,480,206.60 and 387,404.40 is: 581,259.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,545.20 : 1,480,206.60 = 387,404.40 : x
  2. Step 2: Convert to fraction form
    986,545.20/1,480,206.60 = 387,404.40/x
  3. Step 3: Cross multiply
    986,545.20x = 1,480,206.60 × 387,404.40
  4. Step 4: Simplify right side
    986,545.20x = 573,438,549,749.04
  5. Step 5: Solve for x
    x = 573,438,549,749.04/986,545.20
  6. Step 6: Final answer
    x = 581,259.28

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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.