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Finding the Fourth Proportional to 976,812.10, 1,465,218.15 and 889,720.90

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Solution

The fourth proportional to 976,812.10, 1,465,218.15 and 889,720.90 is: 1,334,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,812.10 : 1,465,218.15 = 889,720.90 : x
  2. Step 2: Convert to fraction form
    976,812.10/1,465,218.15 = 889,720.90/x
  3. Step 3: Cross multiply
    976,812.10x = 1,465,218.15 × 889,720.90
  4. Step 4: Simplify right side
    976,812.10x = 1,303,635,211,114.34
  5. Step 5: Solve for x
    x = 1,303,635,211,114.34/976,812.10
  6. Step 6: Final answer
    x = 1,334,581.35

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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.