Home / 811,681.10-1,120,152.93-449,099.06

Finding the Fourth Proportional to 811,681.10, 1,120,152.93 and 449,099.06

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Solution

The fourth proportional to 811,681.10, 1,120,152.93 and 449,099.06 is: 619,774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,681.10 : 1,120,152.93 = 449,099.06 : x
  2. Step 2: Convert to fraction form
    811,681.10/1,120,152.93 = 449,099.06/x
  3. Step 3: Cross multiply
    811,681.10x = 1,120,152.93 × 449,099.06
  4. Step 4: Simplify right side
    811,681.10x = 503,059,627,919.25
  5. Step 5: Solve for x
    x = 503,059,627,919.25/811,681.10
  6. Step 6: Final answer
    x = 619,774.97

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1.5x scale

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.