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Finding the Fourth Proportional to 480,694.75, 720,411.40 and 353,740.75

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Solution

The fourth proportional to 480,694.75, 720,411.40 and 353,740.75 is: 530,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,694.75 : 720,411.40 = 353,740.75 : x
  2. Step 2: Convert to fraction form
    480,694.75/720,411.40 = 353,740.75/x
  3. Step 3: Cross multiply
    480,694.75x = 720,411.40 × 353,740.75
  4. Step 4: Simplify right side
    480,694.75x = 254,838,868,944.55
  5. Step 5: Solve for x
    x = 254,838,868,944.55/480,694.75
  6. Step 6: Final answer
    x = 530,146.98

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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.