Home / 1,405,132.80-1,938,564.54-921,966.18

Finding the Fourth Proportional to 1,405,132.80, 1,938,564.54 and 921,966.18

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Solution

The fourth proportional to 1,405,132.80, 1,938,564.54 and 921,966.18 is: 1,271,972.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,132.80 : 1,938,564.54 = 921,966.18 : x
  2. Step 2: Convert to fraction form
    1,405,132.80/1,938,564.54 = 921,966.18/x
  3. Step 3: Cross multiply
    1,405,132.80x = 1,938,564.54 × 921,966.18
  4. Step 4: Simplify right side
    1,405,132.80x = 1,787,290,943,627.26
  5. Step 5: Solve for x
    x = 1,787,290,943,627.26/1,405,132.80
  6. Step 6: Final answer
    x = 1,271,972.97

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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.