Home / 761,765.40-1,142,939.70-749,809.80

Finding the Fourth Proportional to 761,765.40, 1,142,939.70 and 749,809.80

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Solution

The fourth proportional to 761,765.40, 1,142,939.70 and 749,809.80 is: 1,125,001.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,765.40 : 1,142,939.70 = 749,809.80 : x
  2. Step 2: Convert to fraction form
    761,765.40/1,142,939.70 = 749,809.80/x
  3. Step 3: Cross multiply
    761,765.40x = 1,142,939.70 × 749,809.80
  4. Step 4: Simplify right side
    761,765.40x = 856,987,387,869.06
  5. Step 5: Solve for x
    x = 856,987,387,869.06/761,765.40
  6. Step 6: Final answer
    x = 1,125,001.72

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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.