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Finding the Fourth Proportional to 657,111.69, 906,793.79 and 370,627.65

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Solution

The fourth proportional to 657,111.69, 906,793.79 and 370,627.65 is: 511,454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,111.69 : 906,793.79 = 370,627.65 : x
  2. Step 2: Convert to fraction form
    657,111.69/906,793.79 = 370,627.65/x
  3. Step 3: Cross multiply
    657,111.69x = 906,793.79 × 370,627.65
  4. Step 4: Simplify right side
    657,111.69x = 336,082,849,569.16
  5. Step 5: Solve for x
    x = 336,082,849,569.16/657,111.69
  6. Step 6: Final answer
    x = 511,454.68

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Double scale
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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.