Home / 639,101.02-882,279-397,461.44

Finding the Fourth Proportional to 639,101.02, 882,279 and 397,461.44

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Solution

The fourth proportional to 639,101.02, 882,279 and 397,461.44 is: 548,695.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,101.02 : 882,279 = 397,461.44 : x
  2. Step 2: Convert to fraction form
    639,101.02/882,279 = 397,461.44/x
  3. Step 3: Cross multiply
    639,101.02x = 882,279 × 397,461.44
  4. Step 4: Simplify right side
    639,101.02x = 350,671,881,821.76
  5. Step 5: Solve for x
    x = 350,671,881,821.76/639,101.02
  6. Step 6: Final answer
    x = 548,695.54

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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.