Home / 648,107.40-972,161.10-648,107.40

Finding the Fourth Proportional to 648,107.40, 972,161.10 and 648,107.40

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Solution

The fourth proportional to 648,107.40, 972,161.10 and 648,107.40 is: 972,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,107.40 : 972,161.10 = 648,107.40 : x
  2. Step 2: Convert to fraction form
    648,107.40/972,161.10 = 648,107.40/x
  3. Step 3: Cross multiply
    648,107.40x = 972,161.10 × 648,107.40
  4. Step 4: Simplify right side
    648,107.40x = 630,064,802,902.14
  5. Step 5: Solve for x
    x = 630,064,802,902.14/648,107.40
  6. Step 6: Final answer
    x = 972,161.10

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Half scale
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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.