Home / 687,090.72-1,029,585.04-367,288.08

Finding the Fourth Proportional to 687,090.72, 1,029,585.04 and 367,288.08

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Solution

The fourth proportional to 687,090.72, 1,029,585.04 and 367,288.08 is: 550,370.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,090.72 : 1,029,585.04 = 367,288.08 : x
  2. Step 2: Convert to fraction form
    687,090.72/1,029,585.04 = 367,288.08/x
  3. Step 3: Cross multiply
    687,090.72x = 1,029,585.04 × 367,288.08
  4. Step 4: Simplify right side
    687,090.72x = 378,154,312,538.32
  5. Step 5: Solve for x
    x = 378,154,312,538.32/687,090.72
  6. Step 6: Final answer
    x = 550,370.28

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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.