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Finding the Fourth Proportional to 660,959.32, 912,129.63 and 359,153.32

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Solution

The fourth proportional to 660,959.32, 912,129.63 and 359,153.32 is: 495,634.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,959.32 : 912,129.63 = 359,153.32 : x
  2. Step 2: Convert to fraction form
    660,959.32/912,129.63 = 359,153.32/x
  3. Step 3: Cross multiply
    660,959.32x = 912,129.63 × 359,153.32
  4. Step 4: Simplify right side
    660,959.32x = 327,594,384,884.87
  5. Step 5: Solve for x
    x = 327,594,384,884.87/660,959.32
  6. Step 6: Final answer
    x = 495,634.72

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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.