Home / 869,340.28-1,199,688.74-487,367.16

Finding the Fourth Proportional to 869,340.28, 1,199,688.74 and 487,367.16

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Solution

The fourth proportional to 869,340.28, 1,199,688.74 and 487,367.16 is: 672,566.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,340.28 : 1,199,688.74 = 487,367.16 : x
  2. Step 2: Convert to fraction form
    869,340.28/1,199,688.74 = 487,367.16/x
  3. Step 3: Cross multiply
    869,340.28x = 1,199,688.74 × 487,367.16
  4. Step 4: Simplify right side
    869,340.28x = 584,688,894,097.78
  5. Step 5: Solve for x
    x = 584,688,894,097.78/869,340.28
  6. Step 6: Final answer
    x = 672,566.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.