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Finding the Fourth Proportional to 648,164.70, 972,247.05 and 608,766.30

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Solution

The fourth proportional to 648,164.70, 972,247.05 and 608,766.30 is: 913,149.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,164.70 : 972,247.05 = 608,766.30 : x
  2. Step 2: Convert to fraction form
    648,164.70/972,247.05 = 608,766.30/x
  3. Step 3: Cross multiply
    648,164.70x = 972,247.05 × 608,766.30
  4. Step 4: Simplify right side
    648,164.70x = 591,871,239,314.42
  5. Step 5: Solve for x
    x = 591,871,239,314.42/648,164.70
  6. Step 6: Final answer
    x = 913,149.45

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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.