Home / 1,021,214,947.20-1,529,554,939.20-839,816,419.20

Finding the Fourth Proportional to 1,021,214,947.20, 1,529,554,939.20 and 839,816,419.20

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Solution

The fourth proportional to 1,021,214,947.20, 1,529,554,939.20 and 839,816,419.20 is: 1,257,859,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,214,947.20 : 1,529,554,939.20 = 839,816,419.20 : x
  2. Step 2: Convert to fraction form
    1,021,214,947.20/1,529,554,939.20 = 839,816,419.20/x
  3. Step 3: Cross multiply
    1,021,214,947.20x = 1,529,554,939.20 × 839,816,419.20
  4. Step 4: Simplify right side
    1,021,214,947.20x = 1,284,545,352,008,617,728
  5. Step 5: Solve for x
    x = 1,284,545,352,008,617,728/1,021,214,947.20
  6. Step 6: Final answer
    x = 1,257,859,920.22

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Double scale
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1.5x scale

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.