Home / 626,836.50-864,618.57-420,111

Finding the Fourth Proportional to 626,836.50, 864,618.57 and 420,111

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Solution

The fourth proportional to 626,836.50, 864,618.57 and 420,111 is: 579,474.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,836.50 : 864,618.57 = 420,111 : x
  2. Step 2: Convert to fraction form
    626,836.50/864,618.57 = 420,111/x
  3. Step 3: Cross multiply
    626,836.50x = 864,618.57 × 420,111
  4. Step 4: Simplify right side
    626,836.50x = 363,235,772,061.27
  5. Step 5: Solve for x
    x = 363,235,772,061.27/626,836.50
  6. Step 6: Final answer
    x = 579,474.51

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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.