Home / 724,909.20-1,087,363.80-459,844.80

Finding the Fourth Proportional to 724,909.20, 1,087,363.80 and 459,844.80

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Solution

The fourth proportional to 724,909.20, 1,087,363.80 and 459,844.80 is: 689,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,909.20 : 1,087,363.80 = 459,844.80 : x
  2. Step 2: Convert to fraction form
    724,909.20/1,087,363.80 = 459,844.80/x
  3. Step 3: Cross multiply
    724,909.20x = 1,087,363.80 × 459,844.80
  4. Step 4: Simplify right side
    724,909.20x = 500,018,589,138.24
  5. Step 5: Solve for x
    x = 500,018,589,138.24/724,909.20
  6. Step 6: Final answer
    x = 689,767.20

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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.