Home / 570,158,998.78-786,819,418.48-309,398,614.78

Finding the Fourth Proportional to 570,158,998.78, 786,819,418.48 and 309,398,614.78

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Solution

The fourth proportional to 570,158,998.78, 786,819,418.48 and 309,398,614.78 is: 426,970,088.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,158,998.78 : 786,819,418.48 = 309,398,614.78 : x
  2. Step 2: Convert to fraction form
    570,158,998.78/786,819,418.48 = 309,398,614.78/x
  3. Step 3: Cross multiply
    570,158,998.78x = 786,819,418.48 × 309,398,614.78
  4. Step 4: Simplify right side
    570,158,998.78x = 243,440,838,159,717,120
  5. Step 5: Solve for x
    x = 243,440,838,159,717,120/570,158,998.78
  6. Step 6: Final answer
    x = 426,970,088.49

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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.