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Finding the Fourth Proportional to 660,974.40, 912,142.26 and 374,549.22

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Solution

The fourth proportional to 660,974.40, 912,142.26 and 374,549.22 is: 516,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,974.40 : 912,142.26 = 374,549.22 : x
  2. Step 2: Convert to fraction form
    660,974.40/912,142.26 = 374,549.22/x
  3. Step 3: Cross multiply
    660,974.40x = 912,142.26 × 374,549.22
  4. Step 4: Simplify right side
    660,974.40x = 341,642,172,012.04
  5. Step 5: Solve for x
    x = 341,642,172,012.04/660,974.40
  6. Step 6: Final answer
    x = 516,876.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.