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Finding the Fourth Proportional to 577,981.60, 865,870.80 and 311,653.60

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Solution

The fourth proportional to 577,981.60, 865,870.80 and 311,653.60 is: 466,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,981.60 : 865,870.80 = 311,653.60 : x
  2. Step 2: Convert to fraction form
    577,981.60/865,870.80 = 311,653.60/x
  3. Step 3: Cross multiply
    577,981.60x = 865,870.80 × 311,653.60
  4. Step 4: Simplify right side
    577,981.60x = 269,851,751,954.88
  5. Step 5: Solve for x
    x = 269,851,751,954.88/577,981.60
  6. Step 6: Final answer
    x = 466,886.41

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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.