Home / 724,140.20-1,086,210.30-459,075.80

Finding the Fourth Proportional to 724,140.20, 1,086,210.30 and 459,075.80

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Solution

The fourth proportional to 724,140.20, 1,086,210.30 and 459,075.80 is: 688,613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,140.20 : 1,086,210.30 = 459,075.80 : x
  2. Step 2: Convert to fraction form
    724,140.20/1,086,210.30 = 459,075.80/x
  3. Step 3: Cross multiply
    724,140.20x = 1,086,210.30 × 459,075.80
  4. Step 4: Simplify right side
    724,140.20x = 498,652,862,440.74
  5. Step 5: Solve for x
    x = 498,652,862,440.74/724,140.20
  6. Step 6: Final answer
    x = 688,613.70

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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.