Home / 828,101.80-1,242,881.70-490,720.60

Finding the Fourth Proportional to 828,101.80, 1,242,881.70 and 490,720.60

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Solution

The fourth proportional to 828,101.80, 1,242,881.70 and 490,720.60 is: 736,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,101.80 : 1,242,881.70 = 490,720.60 : x
  2. Step 2: Convert to fraction form
    828,101.80/1,242,881.70 = 490,720.60/x
  3. Step 3: Cross multiply
    828,101.80x = 1,242,881.70 × 490,720.60
  4. Step 4: Simplify right side
    828,101.80x = 609,907,653,553.02
  5. Step 5: Solve for x
    x = 609,907,653,553.02/828,101.80
  6. Step 6: Final answer
    x = 736,512.89

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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.