Home / 6,985,607.67-9,640,123.67-3,929,821.92

Finding the Fourth Proportional to 6,985,607.67, 9,640,123.67 and 3,929,821.92

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Solution

The fourth proportional to 6,985,607.67, 9,640,123.67 and 3,929,821.92 is: 5,423,145.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985,607.67 : 9,640,123.67 = 3,929,821.92 : x
  2. Step 2: Convert to fraction form
    6,985,607.67/9,640,123.67 = 3,929,821.92/x
  3. Step 3: Cross multiply
    6,985,607.67x = 9,640,123.67 × 3,929,821.92
  4. Step 4: Simplify right side
    6,985,607.67x = 37,883,969,319,701.40
  5. Step 5: Solve for x
    x = 37,883,969,319,701.40/6,985,607.67
  6. Step 6: Final answer
    x = 5,423,145.86

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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.