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Finding the Fourth Proportional to 648,009.30, 970,847.55 and 554,697.30

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Solution

The fourth proportional to 648,009.30, 970,847.55 and 554,697.30 is: 831,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,009.30 : 970,847.55 = 554,697.30 : x
  2. Step 2: Convert to fraction form
    648,009.30/970,847.55 = 554,697.30/x
  3. Step 3: Cross multiply
    648,009.30x = 970,847.55 × 554,697.30
  4. Step 4: Simplify right side
    648,009.30x = 538,526,514,696.62
  5. Step 5: Solve for x
    x = 538,526,514,696.62/648,009.30
  6. Step 6: Final answer
    x = 831,047.51

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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.