Home / 723,689.70-998,811.38-401,503.59

Finding the Fourth Proportional to 723,689.70, 998,811.38 and 401,503.59

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Solution

The fourth proportional to 723,689.70, 998,811.38 and 401,503.59 is: 554,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,689.70 : 998,811.38 = 401,503.59 : x
  2. Step 2: Convert to fraction form
    723,689.70/998,811.38 = 401,503.59/x
  3. Step 3: Cross multiply
    723,689.70x = 998,811.38 × 401,503.59
  4. Step 4: Simplify right side
    723,689.70x = 401,026,352,795.34
  5. Step 5: Solve for x
    x = 401,026,352,795.34/723,689.70
  6. Step 6: Final answer
    x = 554,141.30

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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.