Home / 509,721.53-703,433.75-280,296.20

Finding the Fourth Proportional to 509,721.53, 703,433.75 and 280,296.20

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Solution

The fourth proportional to 509,721.53, 703,433.75 and 280,296.20 is: 386,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,721.53 : 703,433.75 = 280,296.20 : x
  2. Step 2: Convert to fraction form
    509,721.53/703,433.75 = 280,296.20/x
  3. Step 3: Cross multiply
    509,721.53x = 703,433.75 × 280,296.20
  4. Step 4: Simplify right side
    509,721.53x = 197,169,807,433.85
  5. Step 5: Solve for x
    x = 197,169,807,433.85/509,721.53
  6. Step 6: Final answer
    x = 386,818.68

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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.