Home / 558,012.20-770,116.95-316,268.78

Finding the Fourth Proportional to 558,012.20, 770,116.95 and 316,268.78

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Solution

The fourth proportional to 558,012.20, 770,116.95 and 316,268.78 is: 436,484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,012.20 : 770,116.95 = 316,268.78 : x
  2. Step 2: Convert to fraction form
    558,012.20/770,116.95 = 316,268.78/x
  3. Step 3: Cross multiply
    558,012.20x = 770,116.95 × 316,268.78
  4. Step 4: Simplify right side
    558,012.20x = 243,563,944,383.24
  5. Step 5: Solve for x
    x = 243,563,944,383.24/558,012.20
  6. Step 6: Final answer
    x = 436,484.98

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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.