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Finding the Fourth Proportional to 660,536.64, 911,545.92 and 358,732.80

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Solution

The fourth proportional to 660,536.64, 911,545.92 and 358,732.80 is: 495,054.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,536.64 : 911,545.92 = 358,732.80 : x
  2. Step 2: Convert to fraction form
    660,536.64/911,545.92 = 358,732.80/x
  3. Step 3: Cross multiply
    660,536.64x = 911,545.92 × 358,732.80
  4. Step 4: Simplify right side
    660,536.64x = 327,001,420,210.18
  5. Step 5: Solve for x
    x = 327,001,420,210.18/660,536.64
  6. Step 6: Final answer
    x = 495,054.17

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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.