Home / 699,040.40-964,666.55-393,116.69

Finding the Fourth Proportional to 699,040.40, 964,666.55 and 393,116.69

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Solution

The fourth proportional to 699,040.40, 964,666.55 and 393,116.69 is: 542,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,040.40 : 964,666.55 = 393,116.69 : x
  2. Step 2: Convert to fraction form
    699,040.40/964,666.55 = 393,116.69/x
  3. Step 3: Cross multiply
    699,040.40x = 964,666.55 × 393,116.69
  4. Step 4: Simplify right side
    699,040.40x = 379,226,514,300.80
  5. Step 5: Solve for x
    x = 379,226,514,300.80/699,040.40
  6. Step 6: Final answer
    x = 542,495.85

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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.