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Finding the Fourth Proportional to 460,798.70, 691,314.71 and 128,374.70

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Solution

The fourth proportional to 460,798.70, 691,314.71 and 128,374.70 is: 192,594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,798.70 : 691,314.71 = 128,374.70 : x
  2. Step 2: Convert to fraction form
    460,798.70/691,314.71 = 128,374.70/x
  3. Step 3: Cross multiply
    460,798.70x = 691,314.71 × 128,374.70
  4. Step 4: Simplify right side
    460,798.70x = 88,747,314,403.39
  5. Step 5: Solve for x
    x = 88,747,314,403.39/460,798.70
  6. Step 6: Final answer
    x = 192,594.54

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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.