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Finding the Fourth Proportional to 777,645.60, 1,073,353.92 and 506,457.60

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Solution

The fourth proportional to 777,645.60, 1,073,353.92 and 506,457.60 is: 699,043.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,645.60 : 1,073,353.92 = 506,457.60 : x
  2. Step 2: Convert to fraction form
    777,645.60/1,073,353.92 = 506,457.60/x
  3. Step 3: Cross multiply
    777,645.60x = 1,073,353.92 × 506,457.60
  4. Step 4: Simplify right side
    777,645.60x = 543,608,250,273.79
  5. Step 5: Solve for x
    x = 543,608,250,273.79/777,645.60
  6. Step 6: Final answer
    x = 699,043.69

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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.