Home / 1,140,803.12-1,711,200-287,876.72

Finding the Fourth Proportional to 1,140,803.12, 1,711,200 and 287,876.72

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Solution

The fourth proportional to 1,140,803.12, 1,711,200 and 287,876.72 is: 431,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,803.12 : 1,711,200 = 287,876.72 : x
  2. Step 2: Convert to fraction form
    1,140,803.12/1,711,200 = 287,876.72/x
  3. Step 3: Cross multiply
    1,140,803.12x = 1,711,200 × 287,876.72
  4. Step 4: Simplify right side
    1,140,803.12x = 492,614,643,264.00
  5. Step 5: Solve for x
    x = 492,614,643,264.00/1,140,803.12
  6. Step 6: Final answer
    x = 431,813.90

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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.