Home / 631,290.60-946,935.90-418,714.20

Finding the Fourth Proportional to 631,290.60, 946,935.90 and 418,714.20

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Solution

The fourth proportional to 631,290.60, 946,935.90 and 418,714.20 is: 628,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,290.60 : 946,935.90 = 418,714.20 : x
  2. Step 2: Convert to fraction form
    631,290.60/946,935.90 = 418,714.20/x
  3. Step 3: Cross multiply
    631,290.60x = 946,935.90 × 418,714.20
  4. Step 4: Simplify right side
    631,290.60x = 396,495,507,819.78
  5. Step 5: Solve for x
    x = 396,495,507,819.78/631,290.60
  6. Step 6: Final answer
    x = 628,071.30

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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.