Home / 989,113.20-1,483,669.80-390,093.90

Finding the Fourth Proportional to 989,113.20, 1,483,669.80 and 390,093.90

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Solution

The fourth proportional to 989,113.20, 1,483,669.80 and 390,093.90 is: 585,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,113.20 : 1,483,669.80 = 390,093.90 : x
  2. Step 2: Convert to fraction form
    989,113.20/1,483,669.80 = 390,093.90/x
  3. Step 3: Cross multiply
    989,113.20x = 1,483,669.80 × 390,093.90
  4. Step 4: Simplify right side
    989,113.20x = 578,770,538,594.22
  5. Step 5: Solve for x
    x = 578,770,538,594.22/989,113.20
  6. Step 6: Final answer
    x = 585,140.85

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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.