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Finding the Fourth Proportional to 866,981.10, 1,300,471.65 and 720,014.70

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Solution

The fourth proportional to 866,981.10, 1,300,471.65 and 720,014.70 is: 1,080,022.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,981.10 : 1,300,471.65 = 720,014.70 : x
  2. Step 2: Convert to fraction form
    866,981.10/1,300,471.65 = 720,014.70/x
  3. Step 3: Cross multiply
    866,981.10x = 1,300,471.65 × 720,014.70
  4. Step 4: Simplify right side
    866,981.10x = 936,358,704,933.26
  5. Step 5: Solve for x
    x = 936,358,704,933.26/866,981.10
  6. Step 6: Final answer
    x = 1,080,022.05

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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.