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Finding the Fourth Proportional to 1,202,128, 1,658,936.64 and 665,584

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Solution

The fourth proportional to 1,202,128, 1,658,936.64 and 665,584 is: 918,505.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,128 : 1,658,936.64 = 665,584 : x
  2. Step 2: Convert to fraction form
    1,202,128/1,658,936.64 = 665,584/x
  3. Step 3: Cross multiply
    1,202,128x = 1,658,936.64 × 665,584
  4. Step 4: Simplify right side
    1,202,128x = 1,104,161,684,597.76
  5. Step 5: Solve for x
    x = 1,104,161,684,597.76/1,202,128
  6. Step 6: Final answer
    x = 918,505.92

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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.