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Finding the Fourth Proportional to 978,064.20, 1,466,513.10 and 505,672.20

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Solution

The fourth proportional to 978,064.20, 1,466,513.10 and 505,672.20 is: 758,206.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,064.20 : 1,466,513.10 = 505,672.20 : x
  2. Step 2: Convert to fraction form
    978,064.20/1,466,513.10 = 505,672.20/x
  3. Step 3: Cross multiply
    978,064.20x = 1,466,513.10 × 505,672.20
  4. Step 4: Simplify right side
    978,064.20x = 741,574,905,605.82
  5. Step 5: Solve for x
    x = 741,574,905,605.82/978,064.20
  6. Step 6: Final answer
    x = 758,206.78

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1.5x scale

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.