Home / 778,818.72-1,074,783.84-456,761.16

Finding the Fourth Proportional to 778,818.72, 1,074,783.84 and 456,761.16

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Solution

The fourth proportional to 778,818.72, 1,074,783.84 and 456,761.16 is: 630,338.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,818.72 : 1,074,783.84 = 456,761.16 : x
  2. Step 2: Convert to fraction form
    778,818.72/1,074,783.84 = 456,761.16/x
  3. Step 3: Cross multiply
    778,818.72x = 1,074,783.84 × 456,761.16
  4. Step 4: Simplify right side
    778,818.72x = 490,919,513,507.65
  5. Step 5: Solve for x
    x = 490,919,513,507.65/778,818.72
  6. Step 6: Final answer
    x = 630,338.62

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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.