Home / 990,229.50-1,485,535.14-421,600.05

Finding the Fourth Proportional to 990,229.50, 1,485,535.14 and 421,600.05

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Solution

The fourth proportional to 990,229.50, 1,485,535.14 and 421,600.05 is: 632,481.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,229.50 : 1,485,535.14 = 421,600.05 : x
  2. Step 2: Convert to fraction form
    990,229.50/1,485,535.14 = 421,600.05/x
  3. Step 3: Cross multiply
    990,229.50x = 1,485,535.14 × 421,600.05
  4. Step 4: Simplify right side
    990,229.50x = 626,301,689,300.76
  5. Step 5: Solve for x
    x = 626,301,689,300.76/990,229.50
  6. Step 6: Final answer
    x = 632,481.35

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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.