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Finding the Fourth Proportional to 482,815.84, 666,838.80 and 317,980.64

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Solution

The fourth proportional to 482,815.84, 666,838.80 and 317,980.64 is: 439,177.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,815.84 : 666,838.80 = 317,980.64 : x
  2. Step 2: Convert to fraction form
    482,815.84/666,838.80 = 317,980.64/x
  3. Step 3: Cross multiply
    482,815.84x = 666,838.80 × 317,980.64
  4. Step 4: Simplify right side
    482,815.84x = 212,041,828,400.83
  5. Step 5: Solve for x
    x = 212,041,828,400.83/482,815.84
  6. Step 6: Final answer
    x = 439,177.45

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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.