Home / 811,655.60-1,217,483.40-368,423.60

Finding the Fourth Proportional to 811,655.60, 1,217,483.40 and 368,423.60

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Solution

The fourth proportional to 811,655.60, 1,217,483.40 and 368,423.60 is: 552,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,655.60 : 1,217,483.40 = 368,423.60 : x
  2. Step 2: Convert to fraction form
    811,655.60/1,217,483.40 = 368,423.60/x
  3. Step 3: Cross multiply
    811,655.60x = 1,217,483.40 × 368,423.60
  4. Step 4: Simplify right side
    811,655.60x = 448,549,617,168.24
  5. Step 5: Solve for x
    x = 448,549,617,168.24/811,655.60
  6. Step 6: Final answer
    x = 552,635.40

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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.