Home / 628,719.40-943,079.10-452,884.60

Finding the Fourth Proportional to 628,719.40, 943,079.10 and 452,884.60

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Solution

The fourth proportional to 628,719.40, 943,079.10 and 452,884.60 is: 679,326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,719.40 : 943,079.10 = 452,884.60 : x
  2. Step 2: Convert to fraction form
    628,719.40/943,079.10 = 452,884.60/x
  3. Step 3: Cross multiply
    628,719.40x = 943,079.10 × 452,884.60
  4. Step 4: Simplify right side
    628,719.40x = 427,106,000,971.86
  5. Step 5: Solve for x
    x = 427,106,000,971.86/628,719.40
  6. Step 6: Final answer
    x = 679,326.90

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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.