Home / 1,287,897.20-1,930,002.60-893,452.40

Finding the Fourth Proportional to 1,287,897.20, 1,930,002.60 and 893,452.40

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Solution

The fourth proportional to 1,287,897.20, 1,930,002.60 and 893,452.40 is: 1,338,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,897.20 : 1,930,002.60 = 893,452.40 : x
  2. Step 2: Convert to fraction form
    1,287,897.20/1,930,002.60 = 893,452.40/x
  3. Step 3: Cross multiply
    1,287,897.20x = 1,930,002.60 × 893,452.40
  4. Step 4: Simplify right side
    1,287,897.20x = 1,724,365,454,976.24
  5. Step 5: Solve for x
    x = 1,724,365,454,976.24/1,287,897.20
  6. Step 6: Final answer
    x = 1,338,899.92

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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.