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Finding the Fourth Proportional to 660,578.01, 911,602.31 and 358,772.01

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Solution

The fourth proportional to 660,578.01, 911,602.31 and 358,772.01 is: 495,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,578.01 : 911,602.31 = 358,772.01 : x
  2. Step 2: Convert to fraction form
    660,578.01/911,602.31 = 358,772.01/x
  3. Step 3: Cross multiply
    660,578.01x = 911,602.31 × 358,772.01
  4. Step 4: Simplify right side
    660,578.01x = 327,057,393,079.34
  5. Step 5: Solve for x
    x = 327,057,393,079.34/660,578.01
  6. Step 6: Final answer
    x = 495,107.90

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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.