Home / 733,151,521.89-1,011,741,987.20-398,624,039.77

Finding the Fourth Proportional to 733,151,521.89, 1,011,741,987.20 and 398,624,039.77

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Solution

The fourth proportional to 733,151,521.89, 1,011,741,987.20 and 398,624,039.77 is: 550,097,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    733,151,521.89 : 1,011,741,987.20 = 398,624,039.77 : x
  2. Step 2: Convert to fraction form
    733,151,521.89/1,011,741,987.20 = 398,624,039.77/x
  3. Step 3: Cross multiply
    733,151,521.89x = 1,011,741,987.20 × 398,624,039.77
  4. Step 4: Simplify right side
    733,151,521.89x = 403,304,678,142,591,616
  5. Step 5: Solve for x
    x = 403,304,678,142,591,616/733,151,521.89
  6. Step 6: Final answer
    x = 550,097,307.45

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1.5x scale

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.