Home / 788,430.60-1,182,645.90-289,729.80

Finding the Fourth Proportional to 788,430.60, 1,182,645.90 and 289,729.80

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Solution

The fourth proportional to 788,430.60, 1,182,645.90 and 289,729.80 is: 434,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,430.60 : 1,182,645.90 = 289,729.80 : x
  2. Step 2: Convert to fraction form
    788,430.60/1,182,645.90 = 289,729.80/x
  3. Step 3: Cross multiply
    788,430.60x = 1,182,645.90 × 289,729.80
  4. Step 4: Simplify right side
    788,430.60x = 342,647,760,077.82
  5. Step 5: Solve for x
    x = 342,647,760,077.82/788,430.60
  6. Step 6: Final answer
    x = 434,594.70

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Double scale
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Similar ratio
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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.