Home / 484,329.51-668,364.30-280,389.06

Finding the Fourth Proportional to 484,329.51, 668,364.30 and 280,389.06

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Solution

The fourth proportional to 484,329.51, 668,364.30 and 280,389.06 is: 386,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,329.51 : 668,364.30 = 280,389.06 : x
  2. Step 2: Convert to fraction form
    484,329.51/668,364.30 = 280,389.06/x
  3. Step 3: Cross multiply
    484,329.51x = 668,364.30 × 280,389.06
  4. Step 4: Simplify right side
    484,329.51x = 187,402,037,814.56
  5. Step 5: Solve for x
    x = 187,402,037,814.56/484,329.51
  6. Step 6: Final answer
    x = 386,930.87

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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.