Home / 788,947.80-1,183,421.70-290,506.20

Finding the Fourth Proportional to 788,947.80, 1,183,421.70 and 290,506.20

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Solution

The fourth proportional to 788,947.80, 1,183,421.70 and 290,506.20 is: 435,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,947.80 : 1,183,421.70 = 290,506.20 : x
  2. Step 2: Convert to fraction form
    788,947.80/1,183,421.70 = 290,506.20/x
  3. Step 3: Cross multiply
    788,947.80x = 1,183,421.70 × 290,506.20
  4. Step 4: Simplify right side
    788,947.80x = 343,791,341,064.54
  5. Step 5: Solve for x
    x = 343,791,341,064.54/788,947.80
  6. Step 6: Final answer
    x = 435,759.30

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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.