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Finding the Fourth Proportional to 1,260,726.02, 1,739,806 and 687,778.20

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Solution

The fourth proportional to 1,260,726.02, 1,739,806 and 687,778.20 is: 949,136.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,726.02 : 1,739,806 = 687,778.20 : x
  2. Step 2: Convert to fraction form
    1,260,726.02/1,739,806 = 687,778.20/x
  3. Step 3: Cross multiply
    1,260,726.02x = 1,739,806 × 687,778.20
  4. Step 4: Simplify right side
    1,260,726.02x = 1,196,600,639,029.20
  5. Step 5: Solve for x
    x = 1,196,600,639,029.20/1,260,726.02
  6. Step 6: Final answer
    x = 949,136.15

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1.5x scale

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.