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Finding the Fourth Proportional to 660,906.32, 912,056.28 and 359,100.32

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Solution

The fourth proportional to 660,906.32, 912,056.28 and 359,100.32 is: 495,561.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,906.32 : 912,056.28 = 359,100.32 : x
  2. Step 2: Convert to fraction form
    660,906.32/912,056.28 = 359,100.32/x
  3. Step 3: Cross multiply
    660,906.32x = 912,056.28 × 359,100.32
  4. Step 4: Simplify right side
    660,906.32x = 327,519,702,006.01
  5. Step 5: Solve for x
    x = 327,519,702,006.01/660,906.32
  6. Step 6: Final answer
    x = 495,561.46

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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.