Home / 501,981,015.40-692,750,622.90-278,972,097.28

Finding the Fourth Proportional to 501,981,015.40, 692,750,622.90 and 278,972,097.28

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Solution

The fourth proportional to 501,981,015.40, 692,750,622.90 and 278,972,097.28 is: 384,990,842.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,981,015.40 : 692,750,622.90 = 278,972,097.28 : x
  2. Step 2: Convert to fraction form
    501,981,015.40/692,750,622.90 = 278,972,097.28/x
  3. Step 3: Cross multiply
    501,981,015.40x = 692,750,622.90 × 278,972,097.28
  4. Step 4: Simplify right side
    501,981,015.40x = 193,258,094,162,439,360
  5. Step 5: Solve for x
    x = 193,258,094,162,439,360/501,981,015.40
  6. Step 6: Final answer
    x = 384,990,842.75

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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.