Home / 987,276.69-1,480,621.59-418,649.40

Finding the Fourth Proportional to 987,276.69, 1,480,621.59 and 418,649.40

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Solution

The fourth proportional to 987,276.69, 1,480,621.59 and 418,649.40 is: 627,849.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,276.69 : 1,480,621.59 = 418,649.40 : x
  2. Step 2: Convert to fraction form
    987,276.69/1,480,621.59 = 418,649.40/x
  3. Step 3: Cross multiply
    987,276.69x = 1,480,621.59 × 418,649.40
  4. Step 4: Simplify right side
    987,276.69x = 619,861,340,280.55
  5. Step 5: Solve for x
    x = 619,861,340,280.55/987,276.69
  6. Step 6: Final answer
    x = 627,849.67

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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.