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Finding the Fourth Proportional to 656,920.15, 906,714.95 and 370,606.31

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Solution

The fourth proportional to 656,920.15, 906,714.95 and 370,606.31 is: 511,529.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,920.15 : 906,714.95 = 370,606.31 : x
  2. Step 2: Convert to fraction form
    656,920.15/906,714.95 = 370,606.31/x
  3. Step 3: Cross multiply
    656,920.15x = 906,714.95 × 370,606.31
  4. Step 4: Simplify right side
    656,920.15x = 336,034,282,255.09
  5. Step 5: Solve for x
    x = 336,034,282,255.09/656,920.15
  6. Step 6: Final answer
    x = 511,529.88

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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.