Home / 778,837.40-1,167,449.70-423,099.80

Finding the Fourth Proportional to 778,837.40, 1,167,449.70 and 423,099.80

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Solution

The fourth proportional to 778,837.40, 1,167,449.70 and 423,099.80 is: 634,211.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,837.40 : 1,167,449.70 = 423,099.80 : x
  2. Step 2: Convert to fraction form
    778,837.40/1,167,449.70 = 423,099.80/x
  3. Step 3: Cross multiply
    778,837.40x = 1,167,449.70 × 423,099.80
  4. Step 4: Simplify right side
    778,837.40x = 493,947,734,580.06
  5. Step 5: Solve for x
    x = 493,947,734,580.06/778,837.40
  6. Step 6: Final answer
    x = 634,211.63

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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.