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Finding the Fourth Proportional to 657,134.38, 906,887.76 and 370,648.30

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Solution

The fourth proportional to 657,134.38, 906,887.76 and 370,648.30 is: 511,518.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,134.38 : 906,887.76 = 370,648.30 : x
  2. Step 2: Convert to fraction form
    657,134.38/906,887.76 = 370,648.30/x
  3. Step 3: Cross multiply
    657,134.38x = 906,887.76 × 370,648.30
  4. Step 4: Simplify right side
    657,134.38x = 336,136,406,534.81
  5. Step 5: Solve for x
    x = 336,136,406,534.81/657,134.38
  6. Step 6: Final answer
    x = 511,518.52

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1.5x scale

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.