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Finding the Fourth Proportional to 418,711.63, 577,635.54 and 279,041.62

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Solution

The fourth proportional to 418,711.63, 577,635.54 and 279,041.62 is: 384,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,711.63 : 577,635.54 = 279,041.62 : x
  2. Step 2: Convert to fraction form
    418,711.63/577,635.54 = 279,041.62/x
  3. Step 3: Cross multiply
    418,711.63x = 577,635.54 × 279,041.62
  4. Step 4: Simplify right side
    418,711.63x = 161,184,356,851.18
  5. Step 5: Solve for x
    x = 161,184,356,851.18/418,711.63
  6. Step 6: Final answer
    x = 384,953.14

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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.