Home / 1,112,438.10-1,668,657.15-687,285.30

Finding the Fourth Proportional to 1,112,438.10, 1,668,657.15 and 687,285.30

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Solution

The fourth proportional to 1,112,438.10, 1,668,657.15 and 687,285.30 is: 1,030,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,438.10 : 1,668,657.15 = 687,285.30 : x
  2. Step 2: Convert to fraction form
    1,112,438.10/1,668,657.15 = 687,285.30/x
  3. Step 3: Cross multiply
    1,112,438.10x = 1,668,657.15 × 687,285.30
  4. Step 4: Simplify right side
    1,112,438.10x = 1,146,843,529,934.90
  5. Step 5: Solve for x
    x = 1,146,843,529,934.90/1,112,438.10
  6. Step 6: Final answer
    x = 1,030,927.95

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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.