Home / 989,117.40-1,483,919.10-279,136.20

Finding the Fourth Proportional to 989,117.40, 1,483,919.10 and 279,136.20

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Solution

The fourth proportional to 989,117.40, 1,483,919.10 and 279,136.20 is: 418,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,117.40 : 1,483,919.10 = 279,136.20 : x
  2. Step 2: Convert to fraction form
    989,117.40/1,483,919.10 = 279,136.20/x
  3. Step 3: Cross multiply
    989,117.40x = 1,483,919.10 × 279,136.20
  4. Step 4: Simplify right side
    989,117.40x = 414,215,538,681.42
  5. Step 5: Solve for x
    x = 414,215,538,681.42/989,117.40
  6. Step 6: Final answer
    x = 418,772.88

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Double scale
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1.5x scale

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.