Home / 907,289,920.40-1,360,934,880.60-261,057,664.40

Finding the Fourth Proportional to 907,289,920.40, 1,360,934,880.60 and 261,057,664.40

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Solution

The fourth proportional to 907,289,920.40, 1,360,934,880.60 and 261,057,664.40 is: 391,586,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,289,920.40 : 1,360,934,880.60 = 261,057,664.40 : x
  2. Step 2: Convert to fraction form
    907,289,920.40/1,360,934,880.60 = 261,057,664.40/x
  3. Step 3: Cross multiply
    907,289,920.40x = 1,360,934,880.60 × 261,057,664.40
  4. Step 4: Simplify right side
    907,289,920.40x = 355,282,481,329,928,832
  5. Step 5: Solve for x
    x = 355,282,481,329,928,832/907,289,920.40
  6. Step 6: Final answer
    x = 391,586,496.60

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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.