Home / 987,915.72-1,363,315.14-535,205.64

Finding the Fourth Proportional to 987,915.72, 1,363,315.14 and 535,205.64

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Solution

The fourth proportional to 987,915.72, 1,363,315.14 and 535,205.64 is: 738,579.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,915.72 : 1,363,315.14 = 535,205.64 : x
  2. Step 2: Convert to fraction form
    987,915.72/1,363,315.14 = 535,205.64/x
  3. Step 3: Cross multiply
    987,915.72x = 1,363,315.14 × 535,205.64
  4. Step 4: Simplify right side
    987,915.72x = 729,653,952,025.39
  5. Step 5: Solve for x
    x = 729,653,952,025.39/987,915.72
  6. Step 6: Final answer
    x = 738,579.15

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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.