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Finding the Fourth Proportional to 578,990.72, 867,202.88 and 444,883.84

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Solution

The fourth proportional to 578,990.72, 867,202.88 and 444,883.84 is: 666,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,990.72 : 867,202.88 = 444,883.84 : x
  2. Step 2: Convert to fraction form
    578,990.72/867,202.88 = 444,883.84/x
  3. Step 3: Cross multiply
    578,990.72x = 867,202.88 × 444,883.84
  4. Step 4: Simplify right side
    578,990.72x = 385,804,547,313.46
  5. Step 5: Solve for x
    x = 385,804,547,313.46/578,990.72
  6. Step 6: Final answer
    x = 666,339.78

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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.