Home / 1,100,686.53-1,651,193.85-390,655.11

Finding the Fourth Proportional to 1,100,686.53, 1,651,193.85 and 390,655.11

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Solution

The fourth proportional to 1,100,686.53, 1,651,193.85 and 390,655.11 is: 586,040.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,686.53 : 1,651,193.85 = 390,655.11 : x
  2. Step 2: Convert to fraction form
    1,100,686.53/1,651,193.85 = 390,655.11/x
  3. Step 3: Cross multiply
    1,100,686.53x = 1,651,193.85 × 390,655.11
  4. Step 4: Simplify right side
    1,100,686.53x = 645,047,315,103.07
  5. Step 5: Solve for x
    x = 645,047,315,103.07/1,100,686.53
  6. Step 6: Final answer
    x = 586,040.89

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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.