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Finding the Fourth Proportional to 867,936.70, 1,301,905.05 and 657,984.70

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Solution

The fourth proportional to 867,936.70, 1,301,905.05 and 657,984.70 is: 986,977.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,936.70 : 1,301,905.05 = 657,984.70 : x
  2. Step 2: Convert to fraction form
    867,936.70/1,301,905.05 = 657,984.70/x
  3. Step 3: Cross multiply
    867,936.70x = 1,301,905.05 × 657,984.70
  4. Step 4: Simplify right side
    867,936.70x = 856,633,603,752.74
  5. Step 5: Solve for x
    x = 856,633,603,752.74/867,936.70
  6. Step 6: Final answer
    x = 986,977.05

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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.