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Finding the Fourth Proportional to 722,549.57, 997,105.36 and 400,258.67

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Solution

The fourth proportional to 722,549.57, 997,105.36 and 400,258.67 is: 552,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,549.57 : 997,105.36 = 400,258.67 : x
  2. Step 2: Convert to fraction form
    722,549.57/997,105.36 = 400,258.67/x
  3. Step 3: Cross multiply
    722,549.57x = 997,105.36 × 400,258.67
  4. Step 4: Simplify right side
    722,549.57x = 399,100,065,243.47
  5. Step 5: Solve for x
    x = 399,100,065,243.47/722,549.57
  6. Step 6: Final answer
    x = 552,349.74

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.