Home / 656,835.69-906,432.75-355,029.69

Finding the Fourth Proportional to 656,835.69, 906,432.75 and 355,029.69

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Solution

The fourth proportional to 656,835.69, 906,432.75 and 355,029.69 is: 489,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,835.69 : 906,432.75 = 355,029.69 : x
  2. Step 2: Convert to fraction form
    656,835.69/906,432.75 = 355,029.69/x
  3. Step 3: Cross multiply
    656,835.69x = 906,432.75 × 355,029.69
  4. Step 4: Simplify right side
    656,835.69x = 321,810,538,238.35
  5. Step 5: Solve for x
    x = 321,810,538,238.35/656,835.69
  6. Step 6: Final answer
    x = 489,940.70

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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.