Home / 648,439.20-972,428.40-293,623.20

Finding the Fourth Proportional to 648,439.20, 972,428.40 and 293,623.20

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Solution

The fourth proportional to 648,439.20, 972,428.40 and 293,623.20 is: 440,330.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,439.20 : 972,428.40 = 293,623.20 : x
  2. Step 2: Convert to fraction form
    648,439.20/972,428.40 = 293,623.20/x
  3. Step 3: Cross multiply
    648,439.20x = 972,428.40 × 293,623.20
  4. Step 4: Simplify right side
    648,439.20x = 285,527,538,578.88
  5. Step 5: Solve for x
    x = 285,527,538,578.88/648,439.20
  6. Step 6: Final answer
    x = 440,330.47

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1.5x scale

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.