Home / 430,970,720.78-646,456,089.76-103,446,233.96

Finding the Fourth Proportional to 430,970,720.78, 646,456,089.76 and 103,446,233.96

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Solution

The fourth proportional to 430,970,720.78, 646,456,089.76 and 103,446,233.96 is: 155,169,353.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,970,720.78 : 646,456,089.76 = 103,446,233.96 : x
  2. Step 2: Convert to fraction form
    430,970,720.78/646,456,089.76 = 103,446,233.96/x
  3. Step 3: Cross multiply
    430,970,720.78x = 646,456,089.76 × 103,446,233.96
  4. Step 4: Simplify right side
    430,970,720.78x = 66,873,447,906,179,712
  5. Step 5: Solve for x
    x = 66,873,447,906,179,712/430,970,720.78
  6. Step 6: Final answer
    x = 155,169,353.00

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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.