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Finding the Fourth Proportional to 724,709.10, 1,087,063.65 and 455,270.70

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Solution

The fourth proportional to 724,709.10, 1,087,063.65 and 455,270.70 is: 682,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,709.10 : 1,087,063.65 = 455,270.70 : x
  2. Step 2: Convert to fraction form
    724,709.10/1,087,063.65 = 455,270.70/x
  3. Step 3: Cross multiply
    724,709.10x = 1,087,063.65 × 455,270.70
  4. Step 4: Simplify right side
    724,709.10x = 494,908,228,880.06
  5. Step 5: Solve for x
    x = 494,908,228,880.06/724,709.10
  6. Step 6: Final answer
    x = 682,906.05

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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.