Home / 711,836.10-982,181.90-421,538.85

Finding the Fourth Proportional to 711,836.10, 982,181.90 and 421,538.85

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Solution

The fourth proportional to 711,836.10, 982,181.90 and 421,538.85 is: 581,633.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,836.10 : 982,181.90 = 421,538.85 : x
  2. Step 2: Convert to fraction form
    711,836.10/982,181.90 = 421,538.85/x
  3. Step 3: Cross multiply
    711,836.10x = 982,181.90 × 421,538.85
  4. Step 4: Simplify right side
    711,836.10x = 414,027,829,670.66
  5. Step 5: Solve for x
    x = 414,027,829,670.66/711,836.10
  6. Step 6: Final answer
    x = 581,633.65

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1.5x scale

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.