Home / 492,629.06-679,835.61-288,631.14

Finding the Fourth Proportional to 492,629.06, 679,835.61 and 288,631.14

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Solution

The fourth proportional to 492,629.06, 679,835.61 and 288,631.14 is: 398,315.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,629.06 : 679,835.61 = 288,631.14 : x
  2. Step 2: Convert to fraction form
    492,629.06/679,835.61 = 288,631.14/x
  3. Step 3: Cross multiply
    492,629.06x = 679,835.61 × 288,631.14
  4. Step 4: Simplify right side
    492,629.06x = 196,221,727,126.90
  5. Step 5: Solve for x
    x = 196,221,727,126.90/492,629.06
  6. Step 6: Final answer
    x = 398,315.38

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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.