Home / 463,938.80-640,543.92-356,316.50

Finding the Fourth Proportional to 463,938.80, 640,543.92 and 356,316.50

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Solution

The fourth proportional to 463,938.80, 640,543.92 and 356,316.50 is: 491,953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,938.80 : 640,543.92 = 356,316.50 : x
  2. Step 2: Convert to fraction form
    463,938.80/640,543.92 = 356,316.50/x
  3. Step 3: Cross multiply
    463,938.80x = 640,543.92 × 356,316.50
  4. Step 4: Simplify right side
    463,938.80x = 228,236,367,670.68
  5. Step 5: Solve for x
    x = 228,236,367,670.68/463,938.80
  6. Step 6: Final answer
    x = 491,953.61

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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.