Home / 686,082.15-1,028,926.40-477,048.69

Finding the Fourth Proportional to 686,082.15, 1,028,926.40 and 477,048.69

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Solution

The fourth proportional to 686,082.15, 1,028,926.40 and 477,048.69 is: 715,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,082.15 : 1,028,926.40 = 477,048.69 : x
  2. Step 2: Convert to fraction form
    686,082.15/1,028,926.40 = 477,048.69/x
  3. Step 3: Cross multiply
    686,082.15x = 1,028,926.40 × 477,048.69
  4. Step 4: Simplify right side
    686,082.15x = 490,847,988,841.17
  5. Step 5: Solve for x
    x = 490,847,988,841.17/686,082.15
  6. Step 6: Final answer
    x = 715,436.17

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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.