Home / 1,287,902.20-1,930,010.10-893,457.40

Finding the Fourth Proportional to 1,287,902.20, 1,930,010.10 and 893,457.40

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Solution

The fourth proportional to 1,287,902.20, 1,930,010.10 and 893,457.40 is: 1,338,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,902.20 : 1,930,010.10 = 893,457.40 : x
  2. Step 2: Convert to fraction form
    1,287,902.20/1,930,010.10 = 893,457.40/x
  3. Step 3: Cross multiply
    1,287,902.20x = 1,930,010.10 × 893,457.40
  4. Step 4: Simplify right side
    1,287,902.20x = 1,724,381,805,919.74
  5. Step 5: Solve for x
    x = 1,724,381,805,919.74/1,287,902.20
  6. Step 6: Final answer
    x = 1,338,907.42

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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.