Home / 918,811-1,267,959.18-516,403

Finding the Fourth Proportional to 918,811, 1,267,959.18 and 516,403

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Solution

The fourth proportional to 918,811, 1,267,959.18 and 516,403 is: 712,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,811 : 1,267,959.18 = 516,403 : x
  2. Step 2: Convert to fraction form
    918,811/1,267,959.18 = 516,403/x
  3. Step 3: Cross multiply
    918,811x = 1,267,959.18 × 516,403
  4. Step 4: Simplify right side
    918,811x = 654,777,924,429.54
  5. Step 5: Solve for x
    x = 654,777,924,429.54/918,811
  6. Step 6: Final answer
    x = 712,636.14

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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.