Home / 543,398.20-815,972.10-410,428.60

Finding the Fourth Proportional to 543,398.20, 815,972.10 and 410,428.60

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Solution

The fourth proportional to 543,398.20, 815,972.10 and 410,428.60 is: 616,303.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,398.20 : 815,972.10 = 410,428.60 : x
  2. Step 2: Convert to fraction form
    543,398.20/815,972.10 = 410,428.60/x
  3. Step 3: Cross multiply
    543,398.20x = 815,972.10 × 410,428.60
  4. Step 4: Simplify right side
    543,398.20x = 334,898,286,642.06
  5. Step 5: Solve for x
    x = 334,898,286,642.06/543,398.20
  6. Step 6: Final answer
    x = 616,303.64

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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.