Home / 728,724.51-1,005,819.93-496,535.31

Finding the Fourth Proportional to 728,724.51, 1,005,819.93 and 496,535.31

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Solution

The fourth proportional to 728,724.51, 1,005,819.93 and 496,535.31 is: 685,341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,724.51 : 1,005,819.93 = 496,535.31 : x
  2. Step 2: Convert to fraction form
    728,724.51/1,005,819.93 = 496,535.31/x
  3. Step 3: Cross multiply
    728,724.51x = 1,005,819.93 × 496,535.31
  4. Step 4: Simplify right side
    728,724.51x = 499,425,110,746.73
  5. Step 5: Solve for x
    x = 499,425,110,746.73/728,724.51
  6. Step 6: Final answer
    x = 685,341.45

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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.