Home / 918,811.50-1,267,959.87-516,403.50

Finding the Fourth Proportional to 918,811.50, 1,267,959.87 and 516,403.50

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Solution

The fourth proportional to 918,811.50, 1,267,959.87 and 516,403.50 is: 712,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,811.50 : 1,267,959.87 = 516,403.50 : x
  2. Step 2: Convert to fraction form
    918,811.50/1,267,959.87 = 516,403.50/x
  3. Step 3: Cross multiply
    918,811.50x = 1,267,959.87 × 516,403.50
  4. Step 4: Simplify right side
    918,811.50x = 654,778,914,727.55
  5. Step 5: Solve for x
    x = 654,778,914,727.55/918,811.50
  6. Step 6: Final answer
    x = 712,636.83

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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.