Home / 421,092,001.70-631,638,002.55-319,055,329.70

Finding the Fourth Proportional to 421,092,001.70, 631,638,002.55 and 319,055,329.70

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Solution

The fourth proportional to 421,092,001.70, 631,638,002.55 and 319,055,329.70 is: 478,582,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,092,001.70 : 631,638,002.55 = 319,055,329.70 : x
  2. Step 2: Convert to fraction form
    421,092,001.70/631,638,002.55 = 319,055,329.70/x
  3. Step 3: Cross multiply
    421,092,001.70x = 631,638,002.55 × 319,055,329.70
  4. Step 4: Simplify right side
    421,092,001.70x = 201,527,471,154,639,680
  5. Step 5: Solve for x
    x = 201,527,471,154,639,680/421,092,001.70
  6. Step 6: Final answer
    x = 478,582,994.55

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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.