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Finding the Fourth Proportional to 1,260,681.93, 1,739,737.44 and 687,718.01

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Solution

The fourth proportional to 1,260,681.93, 1,739,737.44 and 687,718.01 is: 949,048.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,681.93 : 1,739,737.44 = 687,718.01 : x
  2. Step 2: Convert to fraction form
    1,260,681.93/1,739,737.44 = 687,718.01/x
  3. Step 3: Cross multiply
    1,260,681.93x = 1,739,737.44 × 687,718.01
  4. Step 4: Simplify right side
    1,260,681.93x = 1,196,448,774,508.64
  5. Step 5: Solve for x
    x = 1,196,448,774,508.64/1,260,681.93
  6. Step 6: Final answer
    x = 949,048.88

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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.