Home / 910,930.20-1,366,395.30-319,954.20

Finding the Fourth Proportional to 910,930.20, 1,366,395.30 and 319,954.20

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Solution

The fourth proportional to 910,930.20, 1,366,395.30 and 319,954.20 is: 479,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,930.20 : 1,366,395.30 = 319,954.20 : x
  2. Step 2: Convert to fraction form
    910,930.20/1,366,395.30 = 319,954.20/x
  3. Step 3: Cross multiply
    910,930.20x = 1,366,395.30 × 319,954.20
  4. Step 4: Simplify right side
    910,930.20x = 437,183,915,095.26
  5. Step 5: Solve for x
    x = 437,183,915,095.26/910,930.20
  6. Step 6: Final answer
    x = 479,931.30

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Half scale
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Double scale
Find fourth proportional to 910,931.20, 1,366,396.80 and 319,955.20
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.