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Finding the Fourth Proportional to 657,700.08, 908,055 and 403,191.60

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Solution

The fourth proportional to 657,700.08, 908,055 and 403,191.60 is: 556,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,700.08 : 908,055 = 403,191.60 : x
  2. Step 2: Convert to fraction form
    657,700.08/908,055 = 403,191.60/x
  3. Step 3: Cross multiply
    657,700.08x = 908,055 × 403,191.60
  4. Step 4: Simplify right side
    657,700.08x = 366,120,148,338
  5. Step 5: Solve for x
    x = 366,120,148,338/657,700.08
  6. Step 6: Final answer
    x = 556,667.33

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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.