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Finding the Fourth Proportional to 670,715.10, 940,245.30 and 670,715.10

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Solution

The fourth proportional to 670,715.10, 940,245.30 and 670,715.10 is: 940,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,715.10 : 940,245.30 = 670,715.10 : x
  2. Step 2: Convert to fraction form
    670,715.10/940,245.30 = 670,715.10/x
  3. Step 3: Cross multiply
    670,715.10x = 940,245.30 × 670,715.10
  4. Step 4: Simplify right side
    670,715.10x = 630,636,720,414.03
  5. Step 5: Solve for x
    x = 630,636,720,414.03/670,715.10
  6. Step 6: Final answer
    x = 940,245.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.