Home / 728,260.86-1,005,097.36-418,285.39

Finding the Fourth Proportional to 728,260.86, 1,005,097.36 and 418,285.39

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Solution

The fourth proportional to 728,260.86, 1,005,097.36 and 418,285.39 is: 577,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,260.86 : 1,005,097.36 = 418,285.39 : x
  2. Step 2: Convert to fraction form
    728,260.86/1,005,097.36 = 418,285.39/x
  3. Step 3: Cross multiply
    728,260.86x = 1,005,097.36 × 418,285.39
  4. Step 4: Simplify right side
    728,260.86x = 420,417,543,152.79
  5. Step 5: Solve for x
    x = 420,417,543,152.79/728,260.86
  6. Step 6: Final answer
    x = 577,289.77

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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.