Home / 1,119,869.03-1,679,809.70-278,420.78

Finding the Fourth Proportional to 1,119,869.03, 1,679,809.70 and 278,420.78

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Solution

The fourth proportional to 1,119,869.03, 1,679,809.70 and 278,420.78 is: 417,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,869.03 : 1,679,809.70 = 278,420.78 : x
  2. Step 2: Convert to fraction form
    1,119,869.03/1,679,809.70 = 278,420.78/x
  3. Step 3: Cross multiply
    1,119,869.03x = 1,679,809.70 × 278,420.78
  4. Step 4: Simplify right side
    1,119,869.03x = 467,693,926,925.57
  5. Step 5: Solve for x
    x = 467,693,926,925.57/1,119,869.03
  6. Step 6: Final answer
    x = 417,632.70

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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.