Home / 5,428,678.40-8,142,434.40-1,439,590.40

Finding the Fourth Proportional to 5,428,678.40, 8,142,434.40 and 1,439,590.40

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Solution

The fourth proportional to 5,428,678.40, 8,142,434.40 and 1,439,590.40 is: 2,159,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428,678.40 : 8,142,434.40 = 1,439,590.40 : x
  2. Step 2: Convert to fraction form
    5,428,678.40/8,142,434.40 = 1,439,590.40/x
  3. Step 3: Cross multiply
    5,428,678.40x = 8,142,434.40 × 1,439,590.40
  4. Step 4: Simplify right side
    5,428,678.40x = 11,721,770,394,869.76
  5. Step 5: Solve for x
    x = 11,721,770,394,869.76/5,428,678.40
  6. Step 6: Final answer
    x = 2,159,230.95

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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.