Home / 672,749.12-928,618.75-400,902.26

Finding the Fourth Proportional to 672,749.12, 928,618.75 and 400,902.26

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Solution

The fourth proportional to 672,749.12, 928,618.75 and 400,902.26 is: 553,379.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,749.12 : 928,618.75 = 400,902.26 : x
  2. Step 2: Convert to fraction form
    672,749.12/928,618.75 = 400,902.26/x
  3. Step 3: Cross multiply
    672,749.12x = 928,618.75 × 400,902.26
  4. Step 4: Simplify right side
    672,749.12x = 372,285,355,553.38
  5. Step 5: Solve for x
    x = 372,285,355,553.38/672,749.12
  6. Step 6: Final answer
    x = 553,379.18

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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.