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Finding the Fourth Proportional to 558,640.47, 838,376.43 and 274,483.56

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Solution

The fourth proportional to 558,640.47, 838,376.43 and 274,483.56 is: 411,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,640.47 : 838,376.43 = 274,483.56 : x
  2. Step 2: Convert to fraction form
    558,640.47/838,376.43 = 274,483.56/x
  3. Step 3: Cross multiply
    558,640.47x = 838,376.43 × 274,483.56
  4. Step 4: Simplify right side
    558,640.47x = 230,120,547,126.49
  5. Step 5: Solve for x
    x = 230,120,547,126.49/558,640.47
  6. Step 6: Final answer
    x = 411,929.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.