Home / 1,129,491.36-1,558,838.52-645,989.40

Finding the Fourth Proportional to 1,129,491.36, 1,558,838.52 and 645,989.40

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Solution

The fourth proportional to 1,129,491.36, 1,558,838.52 and 645,989.40 is: 891,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,491.36 : 1,558,838.52 = 645,989.40 : x
  2. Step 2: Convert to fraction form
    1,129,491.36/1,558,838.52 = 645,989.40/x
  3. Step 3: Cross multiply
    1,129,491.36x = 1,558,838.52 × 645,989.40
  4. Step 4: Simplify right side
    1,129,491.36x = 1,006,993,160,231.69
  5. Step 5: Solve for x
    x = 1,006,993,160,231.69/1,129,491.36
  6. Step 6: Final answer
    x = 891,545.70

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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.