Home / 788,721.40-1,183,082.10-256,259.80

Finding the Fourth Proportional to 788,721.40, 1,183,082.10 and 256,259.80

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Solution

The fourth proportional to 788,721.40, 1,183,082.10 and 256,259.80 is: 384,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,721.40 : 1,183,082.10 = 256,259.80 : x
  2. Step 2: Convert to fraction form
    788,721.40/1,183,082.10 = 256,259.80/x
  3. Step 3: Cross multiply
    788,721.40x = 1,183,082.10 × 256,259.80
  4. Step 4: Simplify right side
    788,721.40x = 303,176,382,329.58
  5. Step 5: Solve for x
    x = 303,176,382,329.58/788,721.40
  6. Step 6: Final answer
    x = 384,389.70

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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.