Home / 724,271,786.66-999,519,207.71-406,787,980.33

Finding the Fourth Proportional to 724,271,786.66, 999,519,207.71 and 406,787,980.33

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Solution

The fourth proportional to 724,271,786.66, 999,519,207.71 and 406,787,980.33 is: 561,380,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,271,786.66 : 999,519,207.71 = 406,787,980.33 : x
  2. Step 2: Convert to fraction form
    724,271,786.66/999,519,207.71 = 406,787,980.33/x
  3. Step 3: Cross multiply
    724,271,786.66x = 999,519,207.71 × 406,787,980.33
  4. Step 4: Simplify right side
    724,271,786.66x = 406,592,399,804,618,176
  5. Step 5: Solve for x
    x = 406,592,399,804,618,176/724,271,786.66
  6. Step 6: Final answer
    x = 561,380,972.30

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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.