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Finding the Fourth Proportional to 559,306.80, 838,960.20 and 403,009.20

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Solution

The fourth proportional to 559,306.80, 838,960.20 and 403,009.20 is: 604,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,306.80 : 838,960.20 = 403,009.20 : x
  2. Step 2: Convert to fraction form
    559,306.80/838,960.20 = 403,009.20/x
  3. Step 3: Cross multiply
    559,306.80x = 838,960.20 × 403,009.20
  4. Step 4: Simplify right side
    559,306.80x = 338,108,679,033.84
  5. Step 5: Solve for x
    x = 338,108,679,033.84/559,306.80
  6. Step 6: Final answer
    x = 604,513.80

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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.