Home / 1,207,689.18-1,811,532.59-309,129.47

Finding the Fourth Proportional to 1,207,689.18, 1,811,532.59 and 309,129.47

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Solution

The fourth proportional to 1,207,689.18, 1,811,532.59 and 309,129.47 is: 463,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,689.18 : 1,811,532.59 = 309,129.47 : x
  2. Step 2: Convert to fraction form
    1,207,689.18/1,811,532.59 = 309,129.47/x
  3. Step 3: Cross multiply
    1,207,689.18x = 1,811,532.59 × 309,129.47
  4. Step 4: Simplify right side
    1,207,689.18x = 559,998,109,434.43
  5. Step 5: Solve for x
    x = 559,998,109,434.43/1,207,689.18
  6. Step 6: Final answer
    x = 463,693.90

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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.