Home / 990,178.80-1,485,851.40-654,190.80

Finding the Fourth Proportional to 990,178.80, 1,485,851.40 and 654,190.80

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Solution

The fourth proportional to 990,178.80, 1,485,851.40 and 654,190.80 is: 981,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,178.80 : 1,485,851.40 = 654,190.80 : x
  2. Step 2: Convert to fraction form
    990,178.80/1,485,851.40 = 654,190.80/x
  3. Step 3: Cross multiply
    990,178.80x = 1,485,851.40 × 654,190.80
  4. Step 4: Simplify right side
    990,178.80x = 972,030,316,047.12
  5. Step 5: Solve for x
    x = 972,030,316,047.12/990,178.80
  6. Step 6: Final answer
    x = 981,671.51

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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.