Home / 1,124,352.84-1,683,826.80-643,121.76

Finding the Fourth Proportional to 1,124,352.84, 1,683,826.80 and 643,121.76

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Solution

The fourth proportional to 1,124,352.84, 1,683,826.80 and 643,121.76 is: 963,136.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,352.84 : 1,683,826.80 = 643,121.76 : x
  2. Step 2: Convert to fraction form
    1,124,352.84/1,683,826.80 = 643,121.76/x
  3. Step 3: Cross multiply
    1,124,352.84x = 1,683,826.80 × 643,121.76
  4. Step 4: Simplify right side
    1,124,352.84x = 1,082,905,655,151.17
  5. Step 5: Solve for x
    x = 1,082,905,655,151.17/1,124,352.84
  6. Step 6: Final answer
    x = 963,136.85

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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.