Home / 642,848.24-887,070.66-356,343.86

Finding the Fourth Proportional to 642,848.24, 887,070.66 and 356,343.86

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Solution

The fourth proportional to 642,848.24, 887,070.66 and 356,343.86 is: 491,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,848.24 : 887,070.66 = 356,343.86 : x
  2. Step 2: Convert to fraction form
    642,848.24/887,070.66 = 356,343.86/x
  3. Step 3: Cross multiply
    642,848.24x = 887,070.66 × 356,343.86
  4. Step 4: Simplify right side
    642,848.24x = 316,102,183,077.15
  5. Step 5: Solve for x
    x = 316,102,183,077.15/642,848.24
  6. Step 6: Final answer
    x = 491,721.32

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1.5x scale

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.