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Finding the Fourth Proportional to 400,582.60, 603,685.74 and 360,641.50

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Solution

The fourth proportional to 400,582.60, 603,685.74 and 360,641.50 is: 543,493.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,582.60 : 603,685.74 = 360,641.50 : x
  2. Step 2: Convert to fraction form
    400,582.60/603,685.74 = 360,641.50/x
  3. Step 3: Cross multiply
    400,582.60x = 603,685.74 × 360,641.50
  4. Step 4: Simplify right side
    400,582.60x = 217,714,130,645.40
  5. Step 5: Solve for x
    x = 217,714,130,645.40/400,582.60
  6. Step 6: Final answer
    x = 543,493.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.