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Finding the Fourth Proportional to 458,559.04, 688,305.12 and 308,326.72

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Solution

The fourth proportional to 458,559.04, 688,305.12 and 308,326.72 is: 462,803.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,559.04 : 688,305.12 = 308,326.72 : x
  2. Step 2: Convert to fraction form
    458,559.04/688,305.12 = 308,326.72/x
  3. Step 3: Cross multiply
    458,559.04x = 688,305.12 × 308,326.72
  4. Step 4: Simplify right side
    458,559.04x = 212,222,860,008.81
  5. Step 5: Solve for x
    x = 212,222,860,008.81/458,559.04
  6. Step 6: Final answer
    x = 462,803.79

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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.