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Finding the Fourth Proportional to 619,243.20, 928,864.80 and 304,315.20

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Solution

The fourth proportional to 619,243.20, 928,864.80 and 304,315.20 is: 456,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,243.20 : 928,864.80 = 304,315.20 : x
  2. Step 2: Convert to fraction form
    619,243.20/928,864.80 = 304,315.20/x
  3. Step 3: Cross multiply
    619,243.20x = 928,864.80 × 304,315.20
  4. Step 4: Simplify right side
    619,243.20x = 282,667,677,384.96
  5. Step 5: Solve for x
    x = 282,667,677,384.96/619,243.20
  6. Step 6: Final answer
    x = 456,472.80

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Similar ratio
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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.