Home / 1,500,915.78-2,071,264.66-812,587.84

Finding the Fourth Proportional to 1,500,915.78, 2,071,264.66 and 812,587.84

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Solution

The fourth proportional to 1,500,915.78, 2,071,264.66 and 812,587.84 is: 1,121,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,915.78 : 2,071,264.66 = 812,587.84 : x
  2. Step 2: Convert to fraction form
    1,500,915.78/2,071,264.66 = 812,587.84/x
  3. Step 3: Cross multiply
    1,500,915.78x = 2,071,264.66 × 812,587.84
  4. Step 4: Simplify right side
    1,500,915.78x = 1,683,084,476,137.73
  5. Step 5: Solve for x
    x = 1,683,084,476,137.73/1,500,915.78
  6. Step 6: Final answer
    x = 1,121,371.70

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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.