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Finding the Fourth Proportional to 965,908.80, 1,448,863.20 and 742,397.40

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Solution

The fourth proportional to 965,908.80, 1,448,863.20 and 742,397.40 is: 1,113,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,908.80 : 1,448,863.20 = 742,397.40 : x
  2. Step 2: Convert to fraction form
    965,908.80/1,448,863.20 = 742,397.40/x
  3. Step 3: Cross multiply
    965,908.80x = 1,448,863.20 × 742,397.40
  4. Step 4: Simplify right side
    965,908.80x = 1,075,632,272,635.68
  5. Step 5: Solve for x
    x = 1,075,632,272,635.68/965,908.80
  6. Step 6: Final answer
    x = 1,113,596.10

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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.