Home / 498,936.66-688,337.18-307,617.90

Finding the Fourth Proportional to 498,936.66, 688,337.18 and 307,617.90

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Solution

The fourth proportional to 498,936.66, 688,337.18 and 307,617.90 is: 424,392.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,936.66 : 688,337.18 = 307,617.90 : x
  2. Step 2: Convert to fraction form
    498,936.66/688,337.18 = 307,617.90/x
  3. Step 3: Cross multiply
    498,936.66x = 688,337.18 × 307,617.90
  4. Step 4: Simplify right side
    498,936.66x = 211,744,837,803.52
  5. Step 5: Solve for x
    x = 211,744,837,803.52/498,936.66
  6. Step 6: Final answer
    x = 424,392.22

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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.