Home / 990,055.50-1,485,708.00-421,435.73

Finding the Fourth Proportional to 990,055.50, 1,485,708.00 and 421,435.73

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Solution

The fourth proportional to 990,055.50, 1,485,708.00 and 421,435.73 is: 632,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,055.50 : 1,485,708.00 = 421,435.73 : x
  2. Step 2: Convert to fraction form
    990,055.50/1,485,708.00 = 421,435.73/x
  3. Step 3: Cross multiply
    990,055.50x = 1,485,708.00 × 421,435.73
  4. Step 4: Simplify right side
    990,055.50x = 626,130,437,680.73
  5. Step 5: Solve for x
    x = 626,130,437,680.73/990,055.50
  6. Step 6: Final answer
    x = 632,419.54

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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.