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Finding the Fourth Proportional to 607,123.70, 910,685.55 and 489,025.70

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Solution

The fourth proportional to 607,123.70, 910,685.55 and 489,025.70 is: 733,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,123.70 : 910,685.55 = 489,025.70 : x
  2. Step 2: Convert to fraction form
    607,123.70/910,685.55 = 489,025.70/x
  3. Step 3: Cross multiply
    607,123.70x = 910,685.55 × 489,025.70
  4. Step 4: Simplify right side
    607,123.70x = 445,348,638,568.64
  5. Step 5: Solve for x
    x = 445,348,638,568.64/607,123.70
  6. Step 6: Final answer
    x = 733,538.55

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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.