Home / 788,687.10-1,183,030.65-289,986.30

Finding the Fourth Proportional to 788,687.10, 1,183,030.65 and 289,986.30

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Solution

The fourth proportional to 788,687.10, 1,183,030.65 and 289,986.30 is: 434,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,687.10 : 1,183,030.65 = 289,986.30 : x
  2. Step 2: Convert to fraction form
    788,687.10/1,183,030.65 = 289,986.30/x
  3. Step 3: Cross multiply
    788,687.10x = 1,183,030.65 × 289,986.30
  4. Step 4: Simplify right side
    788,687.10x = 343,062,680,980.10
  5. Step 5: Solve for x
    x = 343,062,680,980.10/788,687.10
  6. Step 6: Final answer
    x = 434,979.45

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Half scale
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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.