Home / 815,692.64-1,124,778.20-509,657.24

Finding the Fourth Proportional to 815,692.64, 1,124,778.20 and 509,657.24

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Solution

The fourth proportional to 815,692.64, 1,124,778.20 and 509,657.24 is: 702,778.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,692.64 : 1,124,778.20 = 509,657.24 : x
  2. Step 2: Convert to fraction form
    815,692.64/1,124,778.20 = 509,657.24/x
  3. Step 3: Cross multiply
    815,692.64x = 1,124,778.20 × 509,657.24
  4. Step 4: Simplify right side
    815,692.64x = 573,251,353,024.17
  5. Step 5: Solve for x
    x = 573,251,353,024.17/815,692.64
  6. Step 6: Final answer
    x = 702,778.63

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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.