Home / 414,389.40-621,000.90-306,934.80

Finding the Fourth Proportional to 414,389.40, 621,000.90 and 306,934.80

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Solution

The fourth proportional to 414,389.40, 621,000.90 and 306,934.80 is: 459,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,389.40 : 621,000.90 = 306,934.80 : x
  2. Step 2: Convert to fraction form
    414,389.40/621,000.90 = 306,934.80/x
  3. Step 3: Cross multiply
    414,389.40x = 621,000.90 × 306,934.80
  4. Step 4: Simplify right side
    414,389.40x = 190,606,787,041.32
  5. Step 5: Solve for x
    x = 190,606,787,041.32/414,389.40
  6. Step 6: Final answer
    x = 459,970.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.