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Finding the Fourth Proportional to 563,016.57, 777,018.71 and 321,335.74

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Solution

The fourth proportional to 563,016.57, 777,018.71 and 321,335.74 is: 443,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,016.57 : 777,018.71 = 321,335.74 : x
  2. Step 2: Convert to fraction form
    563,016.57/777,018.71 = 321,335.74/x
  3. Step 3: Cross multiply
    563,016.57x = 777,018.71 × 321,335.74
  4. Step 4: Simplify right side
    563,016.57x = 249,683,882,171.70
  5. Step 5: Solve for x
    x = 249,683,882,171.70/563,016.57
  6. Step 6: Final answer
    x = 443,475.19

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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.