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Finding the Fourth Proportional to 559,308.80, 838,963.20 and 403,011.20

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Solution

The fourth proportional to 559,308.80, 838,963.20 and 403,011.20 is: 604,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,308.80 : 838,963.20 = 403,011.20 : x
  2. Step 2: Convert to fraction form
    559,308.80/838,963.20 = 403,011.20/x
  3. Step 3: Cross multiply
    559,308.80x = 838,963.20 × 403,011.20
  4. Step 4: Simplify right side
    559,308.80x = 338,111,565,987.84
  5. Step 5: Solve for x
    x = 338,111,565,987.84/559,308.80
  6. Step 6: Final answer
    x = 604,516.80

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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.