Home / 989,585.24-1,484,381.52-420,885.05

Finding the Fourth Proportional to 989,585.24, 1,484,381.52 and 420,885.05

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Solution

The fourth proportional to 989,585.24, 1,484,381.52 and 420,885.05 is: 631,329.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,585.24 : 1,484,381.52 = 420,885.05 : x
  2. Step 2: Convert to fraction form
    989,585.24/1,484,381.52 = 420,885.05/x
  3. Step 3: Cross multiply
    989,585.24x = 1,484,381.52 × 420,885.05
  4. Step 4: Simplify right side
    989,585.24x = 624,753,982,842.37
  5. Step 5: Solve for x
    x = 624,753,982,842.37/989,585.24
  6. Step 6: Final answer
    x = 631,329.13

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1.5x scale

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.