Home / 669,387.60-1,004,081.40-520,088.40

Finding the Fourth Proportional to 669,387.60, 1,004,081.40 and 520,088.40

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Solution

The fourth proportional to 669,387.60, 1,004,081.40 and 520,088.40 is: 780,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,387.60 : 1,004,081.40 = 520,088.40 : x
  2. Step 2: Convert to fraction form
    669,387.60/1,004,081.40 = 520,088.40/x
  3. Step 3: Cross multiply
    669,387.60x = 1,004,081.40 × 520,088.40
  4. Step 4: Simplify right side
    669,387.60x = 522,211,088,795.76
  5. Step 5: Solve for x
    x = 522,211,088,795.76/669,387.60
  6. Step 6: Final answer
    x = 780,132.60

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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.