Home / 761,777.40-1,142,677.38-288,335.64

Finding the Fourth Proportional to 761,777.40, 1,142,677.38 and 288,335.64

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Solution

The fourth proportional to 761,777.40, 1,142,677.38 and 288,335.64 is: 432,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,777.40 : 1,142,677.38 = 288,335.64 : x
  2. Step 2: Convert to fraction form
    761,777.40/1,142,677.38 = 288,335.64/x
  3. Step 3: Cross multiply
    761,777.40x = 1,142,677.38 × 288,335.64
  4. Step 4: Simplify right side
    761,777.40x = 329,474,613,675.82
  5. Step 5: Solve for x
    x = 329,474,613,675.82/761,777.40
  6. Step 6: Final answer
    x = 432,507.73

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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.