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Finding the Fourth Proportional to 611,886.24, 918,064.72 and 296,318.88

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Solution

The fourth proportional to 611,886.24, 918,064.72 and 296,318.88 is: 444,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,886.24 : 918,064.72 = 296,318.88 : x
  2. Step 2: Convert to fraction form
    611,886.24/918,064.72 = 296,318.88/x
  3. Step 3: Cross multiply
    611,886.24x = 918,064.72 × 296,318.88
  4. Step 4: Simplify right side
    611,886.24x = 272,039,909,597.91
  5. Step 5: Solve for x
    x = 272,039,909,597.91/611,886.24
  6. Step 6: Final answer
    x = 444,592.30

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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.