Home / 724,635.69-1,000,120.25-418,889.31

Finding the Fourth Proportional to 724,635.69, 1,000,120.25 and 418,889.31

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Solution

The fourth proportional to 724,635.69, 1,000,120.25 and 418,889.31 is: 578,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,635.69 : 1,000,120.25 = 418,889.31 : x
  2. Step 2: Convert to fraction form
    724,635.69/1,000,120.25 = 418,889.31/x
  3. Step 3: Cross multiply
    724,635.69x = 1,000,120.25 × 418,889.31
  4. Step 4: Simplify right side
    724,635.69x = 418,939,678,736.30
  5. Step 5: Solve for x
    x = 418,939,678,736.30/724,635.69
  6. Step 6: Final answer
    x = 578,138.35

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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.