Home / 724,178.58-999,135.25-418,214.55

Finding the Fourth Proportional to 724,178.58, 999,135.25 and 418,214.55

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Solution

The fourth proportional to 724,178.58, 999,135.25 and 418,214.55 is: 577,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,178.58 : 999,135.25 = 418,214.55 : x
  2. Step 2: Convert to fraction form
    724,178.58/999,135.25 = 418,214.55/x
  3. Step 3: Cross multiply
    724,178.58x = 999,135.25 × 418,214.55
  4. Step 4: Simplify right side
    724,178.58x = 417,852,898,967.89
  5. Step 5: Solve for x
    x = 417,852,898,967.89/724,178.58
  6. Step 6: Final answer
    x = 577,002.57

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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.