Home / 501,421.12-691,949.28-275,064.64

Finding the Fourth Proportional to 501,421.12, 691,949.28 and 275,064.64

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Solution

The fourth proportional to 501,421.12, 691,949.28 and 275,064.64 is: 379,582.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,421.12 : 691,949.28 = 275,064.64 : x
  2. Step 2: Convert to fraction form
    501,421.12/691,949.28 = 275,064.64/x
  3. Step 3: Cross multiply
    501,421.12x = 691,949.28 × 275,064.64
  4. Step 4: Simplify right side
    501,421.12x = 190,330,779,601.46
  5. Step 5: Solve for x
    x = 190,330,779,601.46/501,421.12
  6. Step 6: Final answer
    x = 379,582.69

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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.