Home / 8,221,830.20-12,332,130.90-3,428,281.40

Finding the Fourth Proportional to 8,221,830.20, 12,332,130.90 and 3,428,281.40

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Solution

The fourth proportional to 8,221,830.20, 12,332,130.90 and 3,428,281.40 is: 5,142,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221,830.20 : 12,332,130.90 = 3,428,281.40 : x
  2. Step 2: Convert to fraction form
    8,221,830.20/12,332,130.90 = 3,428,281.40/x
  3. Step 3: Cross multiply
    8,221,830.20x = 12,332,130.90 × 3,428,281.40
  4. Step 4: Simplify right side
    8,221,830.20x = 42,278,014,986,835.26
  5. Step 5: Solve for x
    x = 42,278,014,986,835.26/8,221,830.20
  6. Step 6: Final answer
    x = 5,142,165.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.