Home / 687,387.16-1,030,947.24-345,739.49

Finding the Fourth Proportional to 687,387.16, 1,030,947.24 and 345,739.49

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Solution

The fourth proportional to 687,387.16, 1,030,947.24 and 345,739.49 is: 518,542.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,387.16 : 1,030,947.24 = 345,739.49 : x
  2. Step 2: Convert to fraction form
    687,387.16/1,030,947.24 = 345,739.49/x
  3. Step 3: Cross multiply
    687,387.16x = 1,030,947.24 × 345,739.49
  4. Step 4: Simplify right side
    687,387.16x = 356,439,172,982.35
  5. Step 5: Solve for x
    x = 356,439,172,982.35/687,387.16
  6. Step 6: Final answer
    x = 518,542.09

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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.