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Finding the Fourth Proportional to 660,934.32, 912,094.96 and 359,128.32

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Solution

The fourth proportional to 660,934.32, 912,094.96 and 359,128.32 is: 495,600.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,934.32 : 912,094.96 = 359,128.32 : x
  2. Step 2: Convert to fraction form
    660,934.32/912,094.96 = 359,128.32/x
  3. Step 3: Cross multiply
    660,934.32x = 912,094.96 × 359,128.32
  4. Step 4: Simplify right side
    660,934.32x = 327,559,130,665.27
  5. Step 5: Solve for x
    x = 327,559,130,665.27/660,934.32
  6. Step 6: Final answer
    x = 495,600.12

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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.