Home / 515,289.18-772,145.53-275,437.20

Finding the Fourth Proportional to 515,289.18, 772,145.53 and 275,437.20

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Solution

The fourth proportional to 515,289.18, 772,145.53 and 275,437.20 is: 412,734.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,289.18 : 772,145.53 = 275,437.20 : x
  2. Step 2: Convert to fraction form
    515,289.18/772,145.53 = 275,437.20/x
  3. Step 3: Cross multiply
    515,289.18x = 772,145.53 × 275,437.20
  4. Step 4: Simplify right side
    515,289.18x = 212,677,601,398.53
  5. Step 5: Solve for x
    x = 212,677,601,398.53/515,289.18
  6. Step 6: Final answer
    x = 412,734.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.