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Finding the Fourth Proportional to 648,437.60, 972,195.60 and 293,621.60

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Solution

The fourth proportional to 648,437.60, 972,195.60 and 293,621.60 is: 440,223.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,437.60 : 972,195.60 = 293,621.60 : x
  2. Step 2: Convert to fraction form
    648,437.60/972,195.60 = 293,621.60/x
  3. Step 3: Cross multiply
    648,437.60x = 972,195.60 × 293,621.60
  4. Step 4: Simplify right side
    648,437.60x = 285,457,627,584.96
  5. Step 5: Solve for x
    x = 285,457,627,584.96/648,437.60
  6. Step 6: Final answer
    x = 440,223.74

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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.