Home / 570,158,949-786,819,349.89-309,398,565

Finding the Fourth Proportional to 570,158,949, 786,819,349.89 and 309,398,565

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Solution

The fourth proportional to 570,158,949, 786,819,349.89 and 309,398,565 is: 426,970,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,158,949 : 786,819,349.89 = 309,398,565 : x
  2. Step 2: Convert to fraction form
    570,158,949/786,819,349.89 = 309,398,565/x
  3. Step 3: Cross multiply
    570,158,949x = 786,819,349.89 × 309,398,565
  4. Step 4: Simplify right side
    570,158,949x = 243,440,777,770,198,912
  5. Step 5: Solve for x
    x = 243,440,777,770,198,912/570,158,949
  6. Step 6: Final answer
    x = 426,970,019.85

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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.