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Finding the Fourth Proportional to 683,956.79, 943,370.83 and 480,053.20

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Solution

The fourth proportional to 683,956.79, 943,370.83 and 480,053.20 is: 662,129.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,956.79 : 943,370.83 = 480,053.20 : x
  2. Step 2: Convert to fraction form
    683,956.79/943,370.83 = 480,053.20/x
  3. Step 3: Cross multiply
    683,956.79x = 943,370.83 × 480,053.20
  4. Step 4: Simplify right side
    683,956.79x = 452,868,185,728.16
  5. Step 5: Solve for x
    x = 452,868,185,728.16/683,956.79
  6. Step 6: Final answer
    x = 662,129.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.