Home / 778,478.31-1,074,275.70-456,402.92

Finding the Fourth Proportional to 778,478.31, 1,074,275.70 and 456,402.92

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Solution

The fourth proportional to 778,478.31, 1,074,275.70 and 456,402.92 is: 629,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,478.31 : 1,074,275.70 = 456,402.92 : x
  2. Step 2: Convert to fraction form
    778,478.31/1,074,275.70 = 456,402.92/x
  3. Step 3: Cross multiply
    778,478.31x = 1,074,275.70 × 456,402.92
  4. Step 4: Simplify right side
    778,478.31x = 490,302,560,993.67
  5. Step 5: Solve for x
    x = 490,302,560,993.67/778,478.31
  6. Step 6: Final answer
    x = 629,821.74

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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.