Home / 724,423.58-999,654.53-402,108.30

Finding the Fourth Proportional to 724,423.58, 999,654.53 and 402,108.30

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Solution

The fourth proportional to 724,423.58, 999,654.53 and 402,108.30 is: 554,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,423.58 : 999,654.53 = 402,108.30 : x
  2. Step 2: Convert to fraction form
    724,423.58/999,654.53 = 402,108.30/x
  3. Step 3: Cross multiply
    724,423.58x = 999,654.53 × 402,108.30
  4. Step 4: Simplify right side
    724,423.58x = 401,969,381,635.06
  5. Step 5: Solve for x
    x = 401,969,381,635.06/724,423.58
  6. Step 6: Final answer
    x = 554,881.70

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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.