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Finding the Fourth Proportional to 578,047.60, 866,488.20 and 262,730.80

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Solution

The fourth proportional to 578,047.60, 866,488.20 and 262,730.80 is: 393,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,047.60 : 866,488.20 = 262,730.80 : x
  2. Step 2: Convert to fraction form
    578,047.60/866,488.20 = 262,730.80/x
  3. Step 3: Cross multiply
    578,047.60x = 866,488.20 × 262,730.80
  4. Step 4: Simplify right side
    578,047.60x = 227,653,137,976.56
  5. Step 5: Solve for x
    x = 227,653,137,976.56/578,047.60
  6. Step 6: Final answer
    x = 393,831.13

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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.