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Finding the Fourth Proportional to 661,584.71, 912,965.54 and 375,130.31

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Solution

The fourth proportional to 661,584.71, 912,965.54 and 375,130.31 is: 517,667.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,584.71 : 912,965.54 = 375,130.31 : x
  2. Step 2: Convert to fraction form
    661,584.71/912,965.54 = 375,130.31/x
  3. Step 3: Cross multiply
    661,584.71x = 912,965.54 × 375,130.31
  4. Step 4: Simplify right side
    661,584.71x = 342,481,042,412.52
  5. Step 5: Solve for x
    x = 342,481,042,412.52/661,584.71
  6. Step 6: Final answer
    x = 517,667.71

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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.