Home / 861,206.40-1,288,650.17-718,699.89

Finding the Fourth Proportional to 861,206.40, 1,288,650.17 and 718,699.89

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Solution

The fourth proportional to 861,206.40, 1,288,650.17 and 718,699.89 is: 1,075,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,206.40 : 1,288,650.17 = 718,699.89 : x
  2. Step 2: Convert to fraction form
    861,206.40/1,288,650.17 = 718,699.89/x
  3. Step 3: Cross multiply
    861,206.40x = 1,288,650.17 × 718,699.89
  4. Step 4: Simplify right side
    861,206.40x = 926,152,740,445.86
  5. Step 5: Solve for x
    x = 926,152,740,445.86/861,206.40
  6. Step 6: Final answer
    x = 1,075,413.21

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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.