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Finding the Fourth Proportional to 1,276,984.56, 1,916,041.05 and 669,627.93

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Solution

The fourth proportional to 1,276,984.56, 1,916,041.05 and 669,627.93 is: 1,004,737.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,984.56 : 1,916,041.05 = 669,627.93 : x
  2. Step 2: Convert to fraction form
    1,276,984.56/1,916,041.05 = 669,627.93/x
  3. Step 3: Cross multiply
    1,276,984.56x = 1,916,041.05 × 669,627.93
  4. Step 4: Simplify right side
    1,276,984.56x = 1,283,034,602,106.53
  5. Step 5: Solve for x
    x = 1,283,034,602,106.53/1,276,984.56
  6. Step 6: Final answer
    x = 1,004,737.76

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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.