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Finding the Fourth Proportional to 578,881.47, 799,246.53 and 361,421.58

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Solution

The fourth proportional to 578,881.47, 799,246.53 and 361,421.58 is: 499,005.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,881.47 : 799,246.53 = 361,421.58 : x
  2. Step 2: Convert to fraction form
    578,881.47/799,246.53 = 361,421.58/x
  3. Step 3: Cross multiply
    578,881.47x = 799,246.53 × 361,421.58
  4. Step 4: Simplify right side
    578,881.47x = 288,864,943,682.12
  5. Step 5: Solve for x
    x = 288,864,943,682.12/578,881.47
  6. Step 6: Final answer
    x = 499,005.34

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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.