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Finding the Fourth Proportional to 660,914.32, 912,067.32 and 359,108.32

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Solution

The fourth proportional to 660,914.32, 912,067.32 and 359,108.32 is: 495,572.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,914.32 : 912,067.32 = 359,108.32 : x
  2. Step 2: Convert to fraction form
    660,914.32/912,067.32 = 359,108.32/x
  3. Step 3: Cross multiply
    660,914.32x = 912,067.32 × 359,108.32
  4. Step 4: Simplify right side
    660,914.32x = 327,530,963,012.10
  5. Step 5: Solve for x
    x = 327,530,963,012.10/660,914.32
  6. Step 6: Final answer
    x = 495,572.50

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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.