Home / 626,479.70-864,541.98-339,999.78

Finding the Fourth Proportional to 626,479.70, 864,541.98 and 339,999.78

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Solution

The fourth proportional to 626,479.70, 864,541.98 and 339,999.78 is: 469,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,479.70 : 864,541.98 = 339,999.78 : x
  2. Step 2: Convert to fraction form
    626,479.70/864,541.98 = 339,999.78/x
  3. Step 3: Cross multiply
    626,479.70x = 864,541.98 × 339,999.78
  4. Step 4: Simplify right side
    626,479.70x = 293,944,083,000.76
  5. Step 5: Solve for x
    x = 293,944,083,000.76/626,479.70
  6. Step 6: Final answer
    x = 469,199.70

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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.