Home / 687,000.69-948,061.77-400,576.13

Finding the Fourth Proportional to 687,000.69, 948,061.77 and 400,576.13

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Solution

The fourth proportional to 687,000.69, 948,061.77 and 400,576.13 is: 552,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,000.69 : 948,061.77 = 400,576.13 : x
  2. Step 2: Convert to fraction form
    687,000.69/948,061.77 = 400,576.13/x
  3. Step 3: Cross multiply
    687,000.69x = 948,061.77 × 400,576.13
  4. Step 4: Simplify right side
    687,000.69x = 379,770,917,473.16
  5. Step 5: Solve for x
    x = 379,770,917,473.16/687,000.69
  6. Step 6: Final answer
    x = 552,795.54

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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.