Home / 662,601.60-992,731.20-640,675.20

Finding the Fourth Proportional to 662,601.60, 992,731.20 and 640,675.20

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Solution

The fourth proportional to 662,601.60, 992,731.20 and 640,675.20 is: 959,880.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,601.60 : 992,731.20 = 640,675.20 : x
  2. Step 2: Convert to fraction form
    662,601.60/992,731.20 = 640,675.20/x
  3. Step 3: Cross multiply
    662,601.60x = 992,731.20 × 640,675.20
  4. Step 4: Simplify right side
    662,601.60x = 636,018,260,106.24
  5. Step 5: Solve for x
    x = 636,018,260,106.24/662,601.60
  6. Step 6: Final answer
    x = 959,880.36

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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.