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Finding the Fourth Proportional to 660,924, 912,077.55 and 359,118

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Solution

The fourth proportional to 660,924, 912,077.55 and 359,118 is: 495,584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,924 : 912,077.55 = 359,118 : x
  2. Step 2: Convert to fraction form
    660,924/912,077.55 = 359,118/x
  3. Step 3: Cross multiply
    660,924x = 912,077.55 × 359,118
  4. Step 4: Simplify right side
    660,924x = 327,543,465,600.90
  5. Step 5: Solve for x
    x = 327,543,465,600.90/660,924
  6. Step 6: Final answer
    x = 495,584.16

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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.