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Finding the Fourth Proportional to 486,994.95, 730,656.45 and 306,871.20

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Solution

The fourth proportional to 486,994.95, 730,656.45 and 306,871.20 is: 460,410.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,994.95 : 730,656.45 = 306,871.20 : x
  2. Step 2: Convert to fraction form
    486,994.95/730,656.45 = 306,871.20/x
  3. Step 3: Cross multiply
    486,994.95x = 730,656.45 × 306,871.20
  4. Step 4: Simplify right side
    486,994.95x = 224,217,417,324.92
  5. Step 5: Solve for x
    x = 224,217,417,324.92/486,994.95
  6. Step 6: Final answer
    x = 460,410.15

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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.