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Finding the Fourth Proportional to 614,854.80, 921,418.20 and 488,710.80

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Solution

The fourth proportional to 614,854.80, 921,418.20 and 488,710.80 is: 732,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,854.80 : 921,418.20 = 488,710.80 : x
  2. Step 2: Convert to fraction form
    614,854.80/921,418.20 = 488,710.80/x
  3. Step 3: Cross multiply
    614,854.80x = 921,418.20 × 488,710.80
  4. Step 4: Simplify right side
    614,854.80x = 450,307,025,656.56
  5. Step 5: Solve for x
    x = 450,307,025,656.56/614,854.80
  6. Step 6: Final answer
    x = 732,379.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.