Home / 1,290,433.20-1,931,713.20-1,148,715.60

Finding the Fourth Proportional to 1,290,433.20, 1,931,713.20 and 1,148,715.60

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Solution

The fourth proportional to 1,290,433.20, 1,931,713.20 and 1,148,715.60 is: 1,719,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,433.20 : 1,931,713.20 = 1,148,715.60 : x
  2. Step 2: Convert to fraction form
    1,290,433.20/1,931,713.20 = 1,148,715.60/x
  3. Step 3: Cross multiply
    1,290,433.20x = 1,931,713.20 × 1,148,715.60
  4. Step 4: Simplify right side
    1,290,433.20x = 2,218,989,087,565.92
  5. Step 5: Solve for x
    x = 2,218,989,087,565.92/1,290,433.20
  6. Step 6: Final answer
    x = 1,719,569.12

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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.