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Finding the Fourth Proportional to 618,699.60, 928,049.40 and 551,048.40

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Solution

The fourth proportional to 618,699.60, 928,049.40 and 551,048.40 is: 826,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,699.60 : 928,049.40 = 551,048.40 : x
  2. Step 2: Convert to fraction form
    618,699.60/928,049.40 = 551,048.40/x
  3. Step 3: Cross multiply
    618,699.60x = 928,049.40 × 551,048.40
  4. Step 4: Simplify right side
    618,699.60x = 511,400,136,990.96
  5. Step 5: Solve for x
    x = 511,400,136,990.96/618,699.60
  6. Step 6: Final answer
    x = 826,572.60

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Similar ratio
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1.5x scale

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.