Home / 811,444.80-1,217,167.20-528,009.60

Finding the Fourth Proportional to 811,444.80, 1,217,167.20 and 528,009.60

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Solution

The fourth proportional to 811,444.80, 1,217,167.20 and 528,009.60 is: 792,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,444.80 : 1,217,167.20 = 528,009.60 : x
  2. Step 2: Convert to fraction form
    811,444.80/1,217,167.20 = 528,009.60/x
  3. Step 3: Cross multiply
    811,444.80x = 1,217,167.20 × 528,009.60
  4. Step 4: Simplify right side
    811,444.80x = 642,675,966,405.12
  5. Step 5: Solve for x
    x = 642,675,966,405.12/811,444.80
  6. Step 6: Final answer
    x = 792,014.40

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Double scale
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Similar ratio
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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.