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Finding the Fourth Proportional to 660,432.32, 911,400.18 and 374,008.22

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Solution

The fourth proportional to 660,432.32, 911,400.18 and 374,008.22 is: 516,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,432.32 : 911,400.18 = 374,008.22 : x
  2. Step 2: Convert to fraction form
    660,432.32/911,400.18 = 374,008.22/x
  3. Step 3: Cross multiply
    660,432.32x = 911,400.18 × 374,008.22
  4. Step 4: Simplify right side
    660,432.32x = 340,871,154,472.48
  5. Step 5: Solve for x
    x = 340,871,154,472.48/660,432.32
  6. Step 6: Final answer
    x = 516,133.37

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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.