Home / 859,407.62-1,287,849.65-432,356.45

Finding the Fourth Proportional to 859,407.62, 1,287,849.65 and 432,356.45

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Solution

The fourth proportional to 859,407.62, 1,287,849.65 and 432,356.45 is: 647,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,407.62 : 1,287,849.65 = 432,356.45 : x
  2. Step 2: Convert to fraction form
    859,407.62/1,287,849.65 = 432,356.45/x
  3. Step 3: Cross multiply
    859,407.62x = 1,287,849.65 × 432,356.45
  4. Step 4: Simplify right side
    859,407.62x = 556,810,094,206.71
  5. Step 5: Solve for x
    x = 556,810,094,206.71/859,407.62
  6. Step 6: Final answer
    x = 647,899.88

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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.