Home / 728,800.70-1,005,746.49-406,502.51

Finding the Fourth Proportional to 728,800.70, 1,005,746.49 and 406,502.51

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Solution

The fourth proportional to 728,800.70, 1,005,746.49 and 406,502.51 is: 560,974.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,800.70 : 1,005,746.49 = 406,502.51 : x
  2. Step 2: Convert to fraction form
    728,800.70/1,005,746.49 = 406,502.51/x
  3. Step 3: Cross multiply
    728,800.70x = 1,005,746.49 × 406,502.51
  4. Step 4: Simplify right side
    728,800.70x = 408,838,467,579.96
  5. Step 5: Solve for x
    x = 408,838,467,579.96/728,800.70
  6. Step 6: Final answer
    x = 560,974.31

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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.