Home / 403,621.38-556,415.73-282,387.06

Finding the Fourth Proportional to 403,621.38, 556,415.73 and 282,387.06

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Solution

The fourth proportional to 403,621.38, 556,415.73 and 282,387.06 is: 389,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,621.38 : 556,415.73 = 282,387.06 : x
  2. Step 2: Convert to fraction form
    403,621.38/556,415.73 = 282,387.06/x
  3. Step 3: Cross multiply
    403,621.38x = 556,415.73 × 282,387.06
  4. Step 4: Simplify right side
    403,621.38x = 157,124,602,132.45
  5. Step 5: Solve for x
    x = 157,124,602,132.45/403,621.38
  6. Step 6: Final answer
    x = 389,287.11

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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.