Home / 1,021,214,931.20-1,529,554,915.20-839,816,403.20

Finding the Fourth Proportional to 1,021,214,931.20, 1,529,554,915.20 and 839,816,403.20

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Solution

The fourth proportional to 1,021,214,931.20, 1,529,554,915.20 and 839,816,403.20 is: 1,257,859,896.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,214,931.20 : 1,529,554,915.20 = 839,816,403.20 : x
  2. Step 2: Convert to fraction form
    1,021,214,931.20/1,529,554,915.20 = 839,816,403.20/x
  3. Step 3: Cross multiply
    1,021,214,931.20x = 1,529,554,915.20 × 839,816,403.20
  4. Step 4: Simplify right side
    1,021,214,931.20x = 1,284,545,307,380,145,152
  5. Step 5: Solve for x
    x = 1,284,545,307,380,145,152/1,021,214,931.20
  6. Step 6: Final answer
    x = 1,257,859,896.22

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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.