Home / 499,897.17-689,140.44-356,408.10

Finding the Fourth Proportional to 499,897.17, 689,140.44 and 356,408.10

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Solution

The fourth proportional to 499,897.17, 689,140.44 and 356,408.10 is: 491,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,897.17 : 689,140.44 = 356,408.10 : x
  2. Step 2: Convert to fraction form
    499,897.17/689,140.44 = 356,408.10/x
  3. Step 3: Cross multiply
    499,897.17x = 689,140.44 × 356,408.10
  4. Step 4: Simplify right side
    499,897.17x = 245,615,234,853.56
  5. Step 5: Solve for x
    x = 245,615,234,853.56/499,897.17
  6. Step 6: Final answer
    x = 491,331.52

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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.