Home / 931,640.10-1,397,460.15-426,200.10

Finding the Fourth Proportional to 931,640.10, 1,397,460.15 and 426,200.10

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Solution

The fourth proportional to 931,640.10, 1,397,460.15 and 426,200.10 is: 639,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,640.10 : 1,397,460.15 = 426,200.10 : x
  2. Step 2: Convert to fraction form
    931,640.10/1,397,460.15 = 426,200.10/x
  3. Step 3: Cross multiply
    931,640.10x = 1,397,460.15 × 426,200.10
  4. Step 4: Simplify right side
    931,640.10x = 595,597,655,676.02
  5. Step 5: Solve for x
    x = 595,597,655,676.02/931,640.10
  6. Step 6: Final answer
    x = 639,300.15

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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.