Home / 421,092,002.20-631,638,003.30-319,055,330.20

Finding the Fourth Proportional to 421,092,002.20, 631,638,003.30 and 319,055,330.20

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Solution

The fourth proportional to 421,092,002.20, 631,638,003.30 and 319,055,330.20 is: 478,582,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,092,002.20 : 631,638,003.30 = 319,055,330.20 : x
  2. Step 2: Convert to fraction form
    421,092,002.20/631,638,003.30 = 319,055,330.20/x
  3. Step 3: Cross multiply
    421,092,002.20x = 631,638,003.30 × 319,055,330.20
  4. Step 4: Simplify right side
    421,092,002.20x = 201,527,471,709,750,176
  5. Step 5: Solve for x
    x = 201,527,471,709,750,176/421,092,002.20
  6. Step 6: Final answer
    x = 478,582,995.30

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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.