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Finding the Fourth Proportional to 1,258,340.40, 1,736,591.40 and 748,973.52

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Solution

The fourth proportional to 1,258,340.40, 1,736,591.40 and 748,973.52 is: 1,033,632.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,340.40 : 1,736,591.40 = 748,973.52 : x
  2. Step 2: Convert to fraction form
    1,258,340.40/1,736,591.40 = 748,973.52/x
  3. Step 3: Cross multiply
    1,258,340.40x = 1,736,591.40 × 748,973.52
  4. Step 4: Simplify right side
    1,258,340.40x = 1,300,660,973,659.73
  5. Step 5: Solve for x
    x = 1,300,660,973,659.73/1,258,340.40
  6. Step 6: Final answer
    x = 1,033,632.06

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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.