Home / 699,945,803.40-1,049,675,569.02-389,527,131.72

Finding the Fourth Proportional to 699,945,803.40, 1,049,675,569.02 and 389,527,131.72

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Solution

The fourth proportional to 699,945,803.40, 1,049,675,569.02 and 389,527,131.72 is: 584,155,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,945,803.40 : 1,049,675,569.02 = 389,527,131.72 : x
  2. Step 2: Convert to fraction form
    699,945,803.40/1,049,675,569.02 = 389,527,131.72/x
  3. Step 3: Cross multiply
    699,945,803.40x = 1,049,675,569.02 × 389,527,131.72
  4. Step 4: Simplify right side
    699,945,803.40x = 408,877,113,636,919,488
  5. Step 5: Solve for x
    x = 408,877,113,636,919,488/699,945,803.40
  6. Step 6: Final answer
    x = 584,155,389.82

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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.