Home / 1,240,140.32-1,860,229.16-430,550.43

Finding the Fourth Proportional to 1,240,140.32, 1,860,229.16 and 430,550.43

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Solution

The fourth proportional to 1,240,140.32, 1,860,229.16 and 430,550.43 is: 645,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,140.32 : 1,860,229.16 = 430,550.43 : x
  2. Step 2: Convert to fraction form
    1,240,140.32/1,860,229.16 = 430,550.43/x
  3. Step 3: Cross multiply
    1,240,140.32x = 1,860,229.16 × 430,550.43
  4. Step 4: Simplify right side
    1,240,140.32x = 800,922,462,583.79
  5. Step 5: Solve for x
    x = 800,922,462,583.79/1,240,140.32
  6. Step 6: Final answer
    x = 645,832.13

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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.