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Finding the Fourth Proportional to 656,807.02, 906,393.42 and 355,001.02

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Solution

The fourth proportional to 656,807.02, 906,393.42 and 355,001.02 is: 489,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,807.02 : 906,393.42 = 355,001.02 : x
  2. Step 2: Convert to fraction form
    656,807.02/906,393.42 = 355,001.02/x
  3. Step 3: Cross multiply
    656,807.02x = 906,393.42 × 355,001.02
  4. Step 4: Simplify right side
    656,807.02x = 321,770,588,621.29
  5. Step 5: Solve for x
    x = 321,770,588,621.29/656,807.02
  6. Step 6: Final answer
    x = 489,901.26

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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.