Home / 818,428.80-1,129,488.52-496,152.48

Finding the Fourth Proportional to 818,428.80, 1,129,488.52 and 496,152.48

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Solution

The fourth proportional to 818,428.80, 1,129,488.52 and 496,152.48 is: 684,724.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,428.80 : 1,129,488.52 = 496,152.48 : x
  2. Step 2: Convert to fraction form
    818,428.80/1,129,488.52 = 496,152.48/x
  3. Step 3: Cross multiply
    818,428.80x = 1,129,488.52 × 496,152.48
  4. Step 4: Simplify right side
    818,428.80x = 560,398,530,329.53
  5. Step 5: Solve for x
    x = 560,398,530,329.53/818,428.80
  6. Step 6: Final answer
    x = 684,724.84

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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.