Home / 505,734,641.60-759,168,832.80-391,226,820.80

Finding the Fourth Proportional to 505,734,641.60, 759,168,832.80 and 391,226,820.80

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Solution

The fourth proportional to 505,734,641.60, 759,168,832.80 and 391,226,820.80 is: 587,278,751.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,734,641.60 : 759,168,832.80 = 391,226,820.80 : x
  2. Step 2: Convert to fraction form
    505,734,641.60/759,168,832.80 = 391,226,820.80/x
  3. Step 3: Cross multiply
    505,734,641.60x = 759,168,832.80 × 391,226,820.80
  4. Step 4: Simplify right side
    505,734,641.60x = 297,007,208,906,790,784
  5. Step 5: Solve for x
    x = 297,007,208,906,790,784/505,734,641.60
  6. Step 6: Final answer
    x = 587,278,751.50

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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.