Home / 661,943.12-913,485.48-360,139.28

Finding the Fourth Proportional to 661,943.12, 913,485.48 and 360,139.28

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Solution

The fourth proportional to 661,943.12, 913,485.48 and 360,139.28 is: 496,994.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,943.12 : 913,485.48 = 360,139.28 : x
  2. Step 2: Convert to fraction form
    661,943.12/913,485.48 = 360,139.28/x
  3. Step 3: Cross multiply
    661,943.12x = 913,485.48 × 360,139.28
  4. Step 4: Simplify right side
    661,943.12x = 328,982,003,057.65
  5. Step 5: Solve for x
    x = 328,982,003,057.65/661,943.12
  6. Step 6: Final answer
    x = 496,994.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.