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Finding the Fourth Proportional to 660,001.80, 990,002.70 and 621,294.60

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Solution

The fourth proportional to 660,001.80, 990,002.70 and 621,294.60 is: 931,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,001.80 : 990,002.70 = 621,294.60 : x
  2. Step 2: Convert to fraction form
    660,001.80/990,002.70 = 621,294.60/x
  3. Step 3: Cross multiply
    660,001.80x = 990,002.70 × 621,294.60
  4. Step 4: Simplify right side
    660,001.80x = 615,083,331,495.42
  5. Step 5: Solve for x
    x = 615,083,331,495.42/660,001.80
  6. Step 6: Final answer
    x = 931,941.90

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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.