Home / 778,829.40-1,167,437.70-423,091.80

Finding the Fourth Proportional to 778,829.40, 1,167,437.70 and 423,091.80

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Solution

The fourth proportional to 778,829.40, 1,167,437.70 and 423,091.80 is: 634,199.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,829.40 : 1,167,437.70 = 423,091.80 : x
  2. Step 2: Convert to fraction form
    778,829.40/1,167,437.70 = 423,091.80/x
  3. Step 3: Cross multiply
    778,829.40x = 1,167,437.70 × 423,091.80
  4. Step 4: Simplify right side
    778,829.40x = 493,933,317,880.86
  5. Step 5: Solve for x
    x = 493,933,317,880.86/778,829.40
  6. Step 6: Final answer
    x = 634,199.63

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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.