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Finding the Fourth Proportional to 480,013.70, 720,020.55 and 403,031.30

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Solution

The fourth proportional to 480,013.70, 720,020.55 and 403,031.30 is: 604,546.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,013.70 : 720,020.55 = 403,031.30 : x
  2. Step 2: Convert to fraction form
    480,013.70/720,020.55 = 403,031.30/x
  3. Step 3: Cross multiply
    480,013.70x = 720,020.55 × 403,031.30
  4. Step 4: Simplify right side
    480,013.70x = 290,190,818,293.22
  5. Step 5: Solve for x
    x = 290,190,818,293.22/480,013.70
  6. Step 6: Final answer
    x = 604,546.95

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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.