Home / 648,104.40-972,156.60-490,640.40

Finding the Fourth Proportional to 648,104.40, 972,156.60 and 490,640.40

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Solution

The fourth proportional to 648,104.40, 972,156.60 and 490,640.40 is: 735,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,104.40 : 972,156.60 = 490,640.40 : x
  2. Step 2: Convert to fraction form
    648,104.40/972,156.60 = 490,640.40/x
  3. Step 3: Cross multiply
    648,104.40x = 972,156.60 × 490,640.40
  4. Step 4: Simplify right side
    648,104.40x = 476,979,303,086.64
  5. Step 5: Solve for x
    x = 476,979,303,086.64/648,104.40
  6. Step 6: Final answer
    x = 735,960.60

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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.