Home / 1,312,856.80-1,969,285.20-471,493.60

Finding the Fourth Proportional to 1,312,856.80, 1,969,285.20 and 471,493.60

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Solution

The fourth proportional to 1,312,856.80, 1,969,285.20 and 471,493.60 is: 707,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,856.80 : 1,969,285.20 = 471,493.60 : x
  2. Step 2: Convert to fraction form
    1,312,856.80/1,969,285.20 = 471,493.60/x
  3. Step 3: Cross multiply
    1,312,856.80x = 1,969,285.20 × 471,493.60
  4. Step 4: Simplify right side
    1,312,856.80x = 928,505,368,374.72
  5. Step 5: Solve for x
    x = 928,505,368,374.72/1,312,856.80
  6. Step 6: Final answer
    x = 707,240.40

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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.