Home / 917,117.80-1,374,510.30-442,781.80

Finding the Fourth Proportional to 917,117.80, 1,374,510.30 and 442,781.80

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Solution

The fourth proportional to 917,117.80, 1,374,510.30 and 442,781.80 is: 663,609.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,117.80 : 1,374,510.30 = 442,781.80 : x
  2. Step 2: Convert to fraction form
    917,117.80/1,374,510.30 = 442,781.80/x
  3. Step 3: Cross multiply
    917,117.80x = 1,374,510.30 × 442,781.80
  4. Step 4: Simplify right side
    917,117.80x = 608,608,144,752.54
  5. Step 5: Solve for x
    x = 608,608,144,752.54/917,117.80
  6. Step 6: Final answer
    x = 663,609.57

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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.