Home / 814,237.80-1,221,356.70-761,749.80

Finding the Fourth Proportional to 814,237.80, 1,221,356.70 and 761,749.80

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Solution

The fourth proportional to 814,237.80, 1,221,356.70 and 761,749.80 is: 1,142,624.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,237.80 : 1,221,356.70 = 761,749.80 : x
  2. Step 2: Convert to fraction form
    814,237.80/1,221,356.70 = 761,749.80/x
  3. Step 3: Cross multiply
    814,237.80x = 1,221,356.70 × 761,749.80
  4. Step 4: Simplify right side
    814,237.80x = 930,368,221,953.66
  5. Step 5: Solve for x
    x = 930,368,221,953.66/814,237.80
  6. Step 6: Final answer
    x = 1,142,624.70

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1.5x scale

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.