Home / 786,319.20-1,179,478.80-470,613.60

Finding the Fourth Proportional to 786,319.20, 1,179,478.80 and 470,613.60

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Solution

The fourth proportional to 786,319.20, 1,179,478.80 and 470,613.60 is: 705,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,319.20 : 1,179,478.80 = 470,613.60 : x
  2. Step 2: Convert to fraction form
    786,319.20/1,179,478.80 = 470,613.60/x
  3. Step 3: Cross multiply
    786,319.20x = 1,179,478.80 × 470,613.60
  4. Step 4: Simplify right side
    786,319.20x = 555,078,764,191.68
  5. Step 5: Solve for x
    x = 555,078,764,191.68/786,319.20
  6. Step 6: Final answer
    x = 705,920.40

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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.