Home / 1,640,988.96-2,264,559.84-915,828.72

Finding the Fourth Proportional to 1,640,988.96, 2,264,559.84 and 915,828.72

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Solution

The fourth proportional to 1,640,988.96, 2,264,559.84 and 915,828.72 is: 1,263,840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,988.96 : 2,264,559.84 = 915,828.72 : x
  2. Step 2: Convert to fraction form
    1,640,988.96/2,264,559.84 = 915,828.72/x
  3. Step 3: Cross multiply
    1,640,988.96x = 2,264,559.84 × 915,828.72
  4. Step 4: Simplify right side
    1,640,988.96x = 2,073,948,939,630.60
  5. Step 5: Solve for x
    x = 2,073,948,939,630.60/1,640,988.96
  6. Step 6: Final answer
    x = 1,263,840.89

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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.