Home / 721,631.16-995,826.48-399,354.84

Finding the Fourth Proportional to 721,631.16, 995,826.48 and 399,354.84

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Solution

The fourth proportional to 721,631.16, 995,826.48 and 399,354.84 is: 551,096.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,631.16 : 995,826.48 = 399,354.84 : x
  2. Step 2: Convert to fraction form
    721,631.16/995,826.48 = 399,354.84/x
  3. Step 3: Cross multiply
    721,631.16x = 995,826.48 × 399,354.84
  4. Step 4: Simplify right side
    721,631.16x = 397,688,124,588.16
  5. Step 5: Solve for x
    x = 397,688,124,588.16/721,631.16
  6. Step 6: Final answer
    x = 551,096.11

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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.