Home / 7,142,793.40-9,857,127.12-3,879,671.80

Finding the Fourth Proportional to 7,142,793.40, 9,857,127.12 and 3,879,671.80

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Solution

The fourth proportional to 7,142,793.40, 9,857,127.12 and 3,879,671.80 is: 5,353,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142,793.40 : 9,857,127.12 = 3,879,671.80 : x
  2. Step 2: Convert to fraction form
    7,142,793.40/9,857,127.12 = 3,879,671.80/x
  3. Step 3: Cross multiply
    7,142,793.40x = 9,857,127.12 × 3,879,671.80
  4. Step 4: Simplify right side
    7,142,793.40x = 38,242,418,116,479.21
  5. Step 5: Solve for x
    x = 38,242,418,116,479.21/7,142,793.40
  6. Step 6: Final answer
    x = 5,353,986.32

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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.