Home / 721,876.04-996,176.88-399,579.23

Finding the Fourth Proportional to 721,876.04, 996,176.88 and 399,579.23

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Solution

The fourth proportional to 721,876.04, 996,176.88 and 399,579.23 is: 551,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,876.04 : 996,176.88 = 399,579.23 : x
  2. Step 2: Convert to fraction form
    721,876.04/996,176.88 = 399,579.23/x
  3. Step 3: Cross multiply
    721,876.04x = 996,176.88 × 399,579.23
  4. Step 4: Simplify right side
    721,876.04x = 398,051,590,654.20
  5. Step 5: Solve for x
    x = 398,051,590,654.20/721,876.04
  6. Step 6: Final answer
    x = 551,412.66

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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.