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Finding the Fourth Proportional to 486,010.70, 729,016.05 and 385,627.40

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Solution

The fourth proportional to 486,010.70, 729,016.05 and 385,627.40 is: 578,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,010.70 : 729,016.05 = 385,627.40 : x
  2. Step 2: Convert to fraction form
    486,010.70/729,016.05 = 385,627.40/x
  3. Step 3: Cross multiply
    486,010.70x = 729,016.05 × 385,627.40
  4. Step 4: Simplify right side
    486,010.70x = 281,128,563,919.77
  5. Step 5: Solve for x
    x = 281,128,563,919.77/486,010.70
  6. Step 6: Final answer
    x = 578,441.10

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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.