Home / 761,392.74-1,142,102.16-288,300.90

Finding the Fourth Proportional to 761,392.74, 1,142,102.16 and 288,300.90

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Solution

The fourth proportional to 761,392.74, 1,142,102.16 and 288,300.90 is: 432,456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,392.74 : 1,142,102.16 = 288,300.90 : x
  2. Step 2: Convert to fraction form
    761,392.74/1,142,102.16 = 288,300.90/x
  3. Step 3: Cross multiply
    761,392.74x = 1,142,102.16 × 288,300.90
  4. Step 4: Simplify right side
    761,392.74x = 329,269,080,619.94
  5. Step 5: Solve for x
    x = 329,269,080,619.94/761,392.74
  6. Step 6: Final answer
    x = 432,456.29

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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.