Home / 987,181.65-1,479,685.67-645,484.17

Finding the Fourth Proportional to 987,181.65, 1,479,685.67 and 645,484.17

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Solution

The fourth proportional to 987,181.65, 1,479,685.67 and 645,484.17 is: 967,515.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,181.65 : 1,479,685.67 = 645,484.17 : x
  2. Step 2: Convert to fraction form
    987,181.65/1,479,685.67 = 645,484.17/x
  3. Step 3: Cross multiply
    987,181.65x = 1,479,685.67 × 645,484.17
  4. Step 4: Simplify right side
    987,181.65x = 955,113,676,560.84
  5. Step 5: Solve for x
    x = 955,113,676,560.84/987,181.65
  6. Step 6: Final answer
    x = 967,515.63

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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.