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Finding the Fourth Proportional to 480,643.97, 720,335.25 and 353,689.76

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Solution

The fourth proportional to 480,643.97, 720,335.25 and 353,689.76 is: 530,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,643.97 : 720,335.25 = 353,689.76 : x
  2. Step 2: Convert to fraction form
    480,643.97/720,335.25 = 353,689.76/x
  3. Step 3: Cross multiply
    480,643.97x = 720,335.25 × 353,689.76
  4. Step 4: Simplify right side
    480,643.97x = 254,775,203,492.88
  5. Step 5: Solve for x
    x = 254,775,203,492.88/480,643.97
  6. Step 6: Final answer
    x = 530,070.53

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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.