Home / 1,287,322.40-1,931,329.20-1,148,045.60

Finding the Fourth Proportional to 1,287,322.40, 1,931,329.20 and 1,148,045.60

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Solution

The fourth proportional to 1,287,322.40, 1,931,329.20 and 1,148,045.60 is: 1,722,376.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,322.40 : 1,931,329.20 = 1,148,045.60 : x
  2. Step 2: Convert to fraction form
    1,287,322.40/1,931,329.20 = 1,148,045.60/x
  3. Step 3: Cross multiply
    1,287,322.40x = 1,931,329.20 × 1,148,045.60
  4. Step 4: Simplify right side
    1,287,322.40x = 2,217,253,990,211.52
  5. Step 5: Solve for x
    x = 2,217,253,990,211.52/1,287,322.40
  6. Step 6: Final answer
    x = 1,722,376.61

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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.