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Finding the Fourth Proportional to 559,020.80, 838,531.20 and 551,147.60

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Solution

The fourth proportional to 559,020.80, 838,531.20 and 551,147.60 is: 826,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,020.80 : 838,531.20 = 551,147.60 : x
  2. Step 2: Convert to fraction form
    559,020.80/838,531.20 = 551,147.60/x
  3. Step 3: Cross multiply
    559,020.80x = 838,531.20 × 551,147.60
  4. Step 4: Simplify right side
    559,020.80x = 462,154,458,405.12
  5. Step 5: Solve for x
    x = 462,154,458,405.12/559,020.80
  6. Step 6: Final answer
    x = 826,721.40

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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.