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Finding the Fourth Proportional to 1,920,922.64, 2,881,280.08 and 974,268.76

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Solution

The fourth proportional to 1,920,922.64, 2,881,280.08 and 974,268.76 is: 1,461,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,922.64 : 2,881,280.08 = 974,268.76 : x
  2. Step 2: Convert to fraction form
    1,920,922.64/2,881,280.08 = 974,268.76/x
  3. Step 3: Cross multiply
    1,920,922.64x = 2,881,280.08 × 974,268.76
  4. Step 4: Simplify right side
    1,920,922.64x = 2,807,141,170,754.30
  5. Step 5: Solve for x
    x = 2,807,141,170,754.30/1,920,922.64
  6. Step 6: Final answer
    x = 1,461,350.45

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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.