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Finding the Fourth Proportional to 578,672.40, 867,317.40 and 298,045.20

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Solution

The fourth proportional to 578,672.40, 867,317.40 and 298,045.20 is: 446,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,672.40 : 867,317.40 = 298,045.20 : x
  2. Step 2: Convert to fraction form
    578,672.40/867,317.40 = 298,045.20/x
  3. Step 3: Cross multiply
    578,672.40x = 867,317.40 × 298,045.20
  4. Step 4: Simplify right side
    578,672.40x = 258,499,787,946.48
  5. Step 5: Solve for x
    x = 258,499,787,946.48/578,672.40
  6. Step 6: Final answer
    x = 446,711.80

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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.