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Finding the Fourth Proportional to 578,326.15, 867,670.71 and 347,780.49

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Solution

The fourth proportional to 578,326.15, 867,670.71 and 347,780.49 is: 521,779.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,326.15 : 867,670.71 = 347,780.49 : x
  2. Step 2: Convert to fraction form
    578,326.15/867,670.71 = 347,780.49/x
  3. Step 3: Cross multiply
    578,326.15x = 867,670.71 × 347,780.49
  4. Step 4: Simplify right side
    578,326.15x = 301,758,941,102.64
  5. Step 5: Solve for x
    x = 301,758,941,102.64/578,326.15
  6. Step 6: Final answer
    x = 521,779.86

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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.