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Finding the Fourth Proportional to 486,109.62, 670,972.08 and 282,206.34

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Solution

The fourth proportional to 486,109.62, 670,972.08 and 282,206.34 is: 389,526.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,109.62 : 670,972.08 = 282,206.34 : x
  2. Step 2: Convert to fraction form
    486,109.62/670,972.08 = 282,206.34/x
  3. Step 3: Cross multiply
    486,109.62x = 670,972.08 × 282,206.34
  4. Step 4: Simplify right side
    486,109.62x = 189,352,574,938.99
  5. Step 5: Solve for x
    x = 189,352,574,938.99/486,109.62
  6. Step 6: Final answer
    x = 389,526.49

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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.