Home / 791,085.18-1,091,697.78-428,508

Finding the Fourth Proportional to 791,085.18, 1,091,697.78 and 428,508

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Solution

The fourth proportional to 791,085.18, 1,091,697.78 and 428,508 is: 591,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,085.18 : 1,091,697.78 = 428,508 : x
  2. Step 2: Convert to fraction form
    791,085.18/1,091,697.78 = 428,508/x
  3. Step 3: Cross multiply
    791,085.18x = 1,091,697.78 × 428,508
  4. Step 4: Simplify right side
    791,085.18x = 467,801,232,312.24
  5. Step 5: Solve for x
    x = 467,801,232,312.24/791,085.18
  6. Step 6: Final answer
    x = 591,341.17

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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.