Home / 753,400.98-1,039,966.29-498,834.18

Finding the Fourth Proportional to 753,400.98, 1,039,966.29 and 498,834.18

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Solution

The fourth proportional to 753,400.98, 1,039,966.29 and 498,834.18 is: 688,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,400.98 : 1,039,966.29 = 498,834.18 : x
  2. Step 2: Convert to fraction form
    753,400.98/1,039,966.29 = 498,834.18/x
  3. Step 3: Cross multiply
    753,400.98x = 1,039,966.29 × 498,834.18
  4. Step 4: Simplify right side
    753,400.98x = 518,770,731,499.79
  5. Step 5: Solve for x
    x = 518,770,731,499.79/753,400.98
  6. Step 6: Final answer
    x = 688,571.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.