Home / 811,095.40-1,216,643.10-391,191.40

Finding the Fourth Proportional to 811,095.40, 1,216,643.10 and 391,191.40

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Solution

The fourth proportional to 811,095.40, 1,216,643.10 and 391,191.40 is: 586,787.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,095.40 : 1,216,643.10 = 391,191.40 : x
  2. Step 2: Convert to fraction form
    811,095.40/1,216,643.10 = 391,191.40/x
  3. Step 3: Cross multiply
    811,095.40x = 1,216,643.10 × 391,191.40
  4. Step 4: Simplify right side
    811,095.40x = 475,940,317,589.34
  5. Step 5: Solve for x
    x = 475,940,317,589.34/811,095.40
  6. Step 6: Final answer
    x = 586,787.10

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Half scale
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Double scale
Find fourth proportional to 811,096.40, 1,216,644.60 and 391,192.40
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.