Home / 725,703.09-1,088,784.24-326,378.76

Finding the Fourth Proportional to 725,703.09, 1,088,784.24 and 326,378.76

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Solution

The fourth proportional to 725,703.09, 1,088,784.24 and 326,378.76 is: 489,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,703.09 : 1,088,784.24 = 326,378.76 : x
  2. Step 2: Convert to fraction form
    725,703.09/1,088,784.24 = 326,378.76/x
  3. Step 3: Cross multiply
    725,703.09x = 1,088,784.24 × 326,378.76
  4. Step 4: Simplify right side
    725,703.09x = 355,356,050,158.74
  5. Step 5: Solve for x
    x = 355,356,050,158.74/725,703.09
  6. Step 6: Final answer
    x = 489,671.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.