Home / 840,157.80-1,260,090.90-307,404.60

Finding the Fourth Proportional to 840,157.80, 1,260,090.90 and 307,404.60

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Solution

The fourth proportional to 840,157.80, 1,260,090.90 and 307,404.60 is: 461,053.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,157.80 : 1,260,090.90 = 307,404.60 : x
  2. Step 2: Convert to fraction form
    840,157.80/1,260,090.90 = 307,404.60/x
  3. Step 3: Cross multiply
    840,157.80x = 1,260,090.90 × 307,404.60
  4. Step 4: Simplify right side
    840,157.80x = 387,357,739,078.14
  5. Step 5: Solve for x
    x = 387,357,739,078.14/840,157.80
  6. Step 6: Final answer
    x = 461,053.55

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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.