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Finding the Fourth Proportional to 610,706.40, 842,648.60 and 352,578.87

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Solution

The fourth proportional to 610,706.40, 842,648.60 and 352,578.87 is: 486,485.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,706.40 : 842,648.60 = 352,578.87 : x
  2. Step 2: Convert to fraction form
    610,706.40/842,648.60 = 352,578.87/x
  3. Step 3: Cross multiply
    610,706.40x = 842,648.60 × 352,578.87
  4. Step 4: Simplify right side
    610,706.40x = 297,100,089,432.19
  5. Step 5: Solve for x
    x = 297,100,089,432.19/610,706.40
  6. Step 6: Final answer
    x = 486,485.96

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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.