Home / 989,301.90-1,483,952.85-390,063.90

Finding the Fourth Proportional to 989,301.90, 1,483,952.85 and 390,063.90

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Solution

The fourth proportional to 989,301.90, 1,483,952.85 and 390,063.90 is: 585,095.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,301.90 : 1,483,952.85 = 390,063.90 : x
  2. Step 2: Convert to fraction form
    989,301.90/1,483,952.85 = 390,063.90/x
  3. Step 3: Cross multiply
    989,301.90x = 1,483,952.85 × 390,063.90
  4. Step 4: Simplify right side
    989,301.90x = 578,836,436,087.12
  5. Step 5: Solve for x
    x = 578,836,436,087.12/989,301.90
  6. Step 6: Final answer
    x = 585,095.85

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Similar ratio
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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.