Home / 778,859.60-1,162,655.38-684,381.20

Finding the Fourth Proportional to 778,859.60, 1,162,655.38 and 684,381.20

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Solution

The fourth proportional to 778,859.60, 1,162,655.38 and 684,381.20 is: 1,021,621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,859.60 : 1,162,655.38 = 684,381.20 : x
  2. Step 2: Convert to fraction form
    778,859.60/1,162,655.38 = 684,381.20/x
  3. Step 3: Cross multiply
    778,859.60x = 1,162,655.38 × 684,381.20
  4. Step 4: Simplify right side
    778,859.60x = 795,699,484,150.86
  5. Step 5: Solve for x
    x = 795,699,484,150.86/778,859.60
  6. Step 6: Final answer
    x = 1,021,621.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.