Home / 718,999.79-992,225.03-396,721.85

Finding the Fourth Proportional to 718,999.79, 992,225.03 and 396,721.85

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Solution

The fourth proportional to 718,999.79, 992,225.03 and 396,721.85 is: 547,479.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,999.79 : 992,225.03 = 396,721.85 : x
  2. Step 2: Convert to fraction form
    718,999.79/992,225.03 = 396,721.85/x
  3. Step 3: Cross multiply
    718,999.79x = 992,225.03 × 396,721.85
  4. Step 4: Simplify right side
    718,999.79x = 393,637,342,573.17
  5. Step 5: Solve for x
    x = 393,637,342,573.17/718,999.79
  6. Step 6: Final answer
    x = 547,479.08

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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.