Home / 1,389,679.86-1,918,955.04-874,292.79

Finding the Fourth Proportional to 1,389,679.86, 1,918,955.04 and 874,292.79

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Solution

The fourth proportional to 1,389,679.86, 1,918,955.04 and 874,292.79 is: 1,207,277.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,679.86 : 1,918,955.04 = 874,292.79 : x
  2. Step 2: Convert to fraction form
    1,389,679.86/1,918,955.04 = 874,292.79/x
  3. Step 3: Cross multiply
    1,389,679.86x = 1,918,955.04 × 874,292.79
  4. Step 4: Simplify right side
    1,389,679.86x = 1,677,728,555,806.16
  5. Step 5: Solve for x
    x = 1,677,728,555,806.16/1,389,679.86
  6. Step 6: Final answer
    x = 1,207,277.02

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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.