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Finding the Fourth Proportional to 885,812.80, 1,327,358.40 and 660,114.40

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Solution

The fourth proportional to 885,812.80, 1,327,358.40 and 660,114.40 is: 989,157.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,812.80 : 1,327,358.40 = 660,114.40 : x
  2. Step 2: Convert to fraction form
    885,812.80/1,327,358.40 = 660,114.40/x
  3. Step 3: Cross multiply
    885,812.80x = 1,327,358.40 × 660,114.40
  4. Step 4: Simplify right side
    885,812.80x = 876,208,393,800.96
  5. Step 5: Solve for x
    x = 876,208,393,800.96/885,812.80
  6. Step 6: Final answer
    x = 989,157.52

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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.