Home / 916,821.05-1,376,136.67-688,321.92

Finding the Fourth Proportional to 916,821.05, 1,376,136.67 and 688,321.92

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Solution

The fourth proportional to 916,821.05, 1,376,136.67 and 688,321.92 is: 1,033,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,821.05 : 1,376,136.67 = 688,321.92 : x
  2. Step 2: Convert to fraction form
    916,821.05/1,376,136.67 = 688,321.92/x
  3. Step 3: Cross multiply
    916,821.05x = 1,376,136.67 × 688,321.92
  4. Step 4: Simplify right side
    916,821.05x = 947,225,036,596.34
  5. Step 5: Solve for x
    x = 947,225,036,596.34/916,821.05
  6. Step 6: Final answer
    x = 1,033,162.41

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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.