Home / 510,400.11-765,401.45-210,929.07

Finding the Fourth Proportional to 510,400.11, 765,401.45 and 210,929.07

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Solution

The fourth proportional to 510,400.11, 765,401.45 and 210,929.07 is: 316,311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,400.11 : 765,401.45 = 210,929.07 : x
  2. Step 2: Convert to fraction form
    510,400.11/765,401.45 = 210,929.07/x
  3. Step 3: Cross multiply
    510,400.11x = 765,401.45 × 210,929.07
  4. Step 4: Simplify right side
    510,400.11x = 161,445,414,970.51
  5. Step 5: Solve for x
    x = 161,445,414,970.51/510,400.11
  6. Step 6: Final answer
    x = 316,311.48

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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.