Home / 279,124,669.35-418,686,905.48-74,647,430.19

Finding the Fourth Proportional to 279,124,669.35, 418,686,905.48 and 74,647,430.19

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Solution

The fourth proportional to 279,124,669.35, 418,686,905.48 and 74,647,430.19 is: 111,971,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,124,669.35 : 418,686,905.48 = 74,647,430.19 : x
  2. Step 2: Convert to fraction form
    279,124,669.35/418,686,905.48 = 74,647,430.19/x
  3. Step 3: Cross multiply
    279,124,669.35x = 418,686,905.48 × 74,647,430.19
  4. Step 4: Simplify right side
    279,124,669.35x = 31,253,901,547,912,192
  5. Step 5: Solve for x
    x = 31,253,901,547,912,192/279,124,669.35
  6. Step 6: Final answer
    x = 111,971,118.93

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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.