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Finding the Fourth Proportional to 1,212,475, 1,673,177 and 668,633.70

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Solution

The fourth proportional to 1,212,475, 1,673,177 and 668,633.70 is: 922,693.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,475 : 1,673,177 = 668,633.70 : x
  2. Step 2: Convert to fraction form
    1,212,475/1,673,177 = 668,633.70/x
  3. Step 3: Cross multiply
    1,212,475x = 1,673,177 × 668,633.70
  4. Step 4: Simplify right side
    1,212,475x = 1,118,742,528,264.90
  5. Step 5: Solve for x
    x = 1,118,742,528,264.90/1,212,475
  6. Step 6: Final answer
    x = 922,693.27

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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.