Home / 1,207,688.68-1,811,531.84-309,128.97

Finding the Fourth Proportional to 1,207,688.68, 1,811,531.84 and 309,128.97

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Solution

The fourth proportional to 1,207,688.68, 1,811,531.84 and 309,128.97 is: 463,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,688.68 : 1,811,531.84 = 309,128.97 : x
  2. Step 2: Convert to fraction form
    1,207,688.68/1,811,531.84 = 309,128.97/x
  3. Step 3: Cross multiply
    1,207,688.68x = 1,811,531.84 × 309,128.97
  4. Step 4: Simplify right side
    1,207,688.68x = 559,996,968,065.40
  5. Step 5: Solve for x
    x = 559,996,968,065.40/1,207,688.68
  6. Step 6: Final answer
    x = 463,693.15

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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.