Home / 1,290,394.76-1,780,938.54-929,014.76

Finding the Fourth Proportional to 1,290,394.76, 1,780,938.54 and 929,014.76

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Solution

The fourth proportional to 1,290,394.76, 1,780,938.54 and 929,014.76 is: 1,282,179.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,394.76 : 1,780,938.54 = 929,014.76 : x
  2. Step 2: Convert to fraction form
    1,290,394.76/1,780,938.54 = 929,014.76/x
  3. Step 3: Cross multiply
    1,290,394.76x = 1,780,938.54 × 929,014.76
  4. Step 4: Simplify right side
    1,290,394.76x = 1,654,518,190,312.85
  5. Step 5: Solve for x
    x = 1,654,518,190,312.85/1,290,394.76
  6. Step 6: Final answer
    x = 1,282,179.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.