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Finding the Fourth Proportional to 561,000.76, 774,247.28 and 315,993.52

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Solution

The fourth proportional to 561,000.76, 774,247.28 and 315,993.52 is: 436,108.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,000.76 : 774,247.28 = 315,993.52 : x
  2. Step 2: Convert to fraction form
    561,000.76/774,247.28 = 315,993.52/x
  3. Step 3: Cross multiply
    561,000.76x = 774,247.28 × 315,993.52
  4. Step 4: Simplify right side
    561,000.76x = 244,657,123,357.63
  5. Step 5: Solve for x
    x = 244,657,123,357.63/561,000.76
  6. Step 6: Final answer
    x = 436,108.36

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Double scale
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Similar ratio
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1.5x scale

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.