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Finding the Fourth Proportional to 664,514.80, 917,030.40 and 362,708.80

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Solution

The fourth proportional to 664,514.80, 917,030.40 and 362,708.80 is: 500,538.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,514.80 : 917,030.40 = 362,708.80 : x
  2. Step 2: Convert to fraction form
    664,514.80/917,030.40 = 362,708.80/x
  3. Step 3: Cross multiply
    664,514.80x = 917,030.40 × 362,708.80
  4. Step 4: Simplify right side
    664,514.80x = 332,614,995,947.52
  5. Step 5: Solve for x
    x = 332,614,995,947.52/664,514.80
  6. Step 6: Final answer
    x = 500,538.13

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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.