Home / 987,276.60-1,480,914.90-644,792.40

Finding the Fourth Proportional to 987,276.60, 1,480,914.90 and 644,792.40

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Solution

The fourth proportional to 987,276.60, 1,480,914.90 and 644,792.40 is: 967,188.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,276.60 : 1,480,914.90 = 644,792.40 : x
  2. Step 2: Convert to fraction form
    987,276.60/1,480,914.90 = 644,792.40/x
  3. Step 3: Cross multiply
    987,276.60x = 1,480,914.90 × 644,792.40
  4. Step 4: Simplify right side
    987,276.60x = 954,882,672,566.76
  5. Step 5: Solve for x
    x = 954,882,672,566.76/987,276.60
  6. Step 6: Final answer
    x = 967,188.60

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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.