Home / 808,360.10-1,115,521.41-445,817.47

Finding the Fourth Proportional to 808,360.10, 1,115,521.41 and 445,817.47

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Solution

The fourth proportional to 808,360.10, 1,115,521.41 and 445,817.47 is: 615,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,360.10 : 1,115,521.41 = 445,817.47 : x
  2. Step 2: Convert to fraction form
    808,360.10/1,115,521.41 = 445,817.47/x
  3. Step 3: Cross multiply
    808,360.10x = 1,115,521.41 × 445,817.47
  4. Step 4: Simplify right side
    808,360.10x = 497,318,932,737.03
  5. Step 5: Solve for x
    x = 497,318,932,737.03/808,360.10
  6. Step 6: Final answer
    x = 615,219.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.