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Finding the Fourth Proportional to 1,978,950.79, 2,730,957.35 and 1,073,532.79

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Solution

The fourth proportional to 1,978,950.79, 2,730,957.35 and 1,073,532.79 is: 1,481,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,950.79 : 2,730,957.35 = 1,073,532.79 : x
  2. Step 2: Convert to fraction form
    1,978,950.79/2,730,957.35 = 1,073,532.79/x
  3. Step 3: Cross multiply
    1,978,950.79x = 2,730,957.35 × 1,073,532.79
  4. Step 4: Simplify right side
    1,978,950.79x = 2,931,772,263,316.51
  5. Step 5: Solve for x
    x = 2,931,772,263,316.51/1,978,950.79
  6. Step 6: Final answer
    x = 1,481,478.10

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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.