Home / 428,386.65-591,442.36-275,690.19

Finding the Fourth Proportional to 428,386.65, 591,442.36 and 275,690.19

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Solution

The fourth proportional to 428,386.65, 591,442.36 and 275,690.19 is: 380,625.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,386.65 : 591,442.36 = 275,690.19 : x
  2. Step 2: Convert to fraction form
    428,386.65/591,442.36 = 275,690.19/x
  3. Step 3: Cross multiply
    428,386.65x = 591,442.36 × 275,690.19
  4. Step 4: Simplify right side
    428,386.65x = 163,054,856,467.70
  5. Step 5: Solve for x
    x = 163,054,856,467.70/428,386.65
  6. Step 6: Final answer
    x = 380,625.44

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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.