Home / 566,054.40-781,135.36-311,402.88

Finding the Fourth Proportional to 566,054.40, 781,135.36 and 311,402.88

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Solution

The fourth proportional to 566,054.40, 781,135.36 and 311,402.88 is: 429,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,054.40 : 781,135.36 = 311,402.88 : x
  2. Step 2: Convert to fraction form
    566,054.40/781,135.36 = 311,402.88/x
  3. Step 3: Cross multiply
    566,054.40x = 781,135.36 × 311,402.88
  4. Step 4: Simplify right side
    566,054.40x = 243,247,800,773.84
  5. Step 5: Solve for x
    x = 243,247,800,773.84/566,054.40
  6. Step 6: Final answer
    x = 429,725.13

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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.