Home / 643,466.30-888,090.09-357,078.38

Finding the Fourth Proportional to 643,466.30, 888,090.09 and 357,078.38

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Solution

The fourth proportional to 643,466.30, 888,090.09 and 357,078.38 is: 492,827.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,466.30 : 888,090.09 = 357,078.38 : x
  2. Step 2: Convert to fraction form
    643,466.30/888,090.09 = 357,078.38/x
  3. Step 3: Cross multiply
    643,466.30x = 888,090.09 × 357,078.38
  4. Step 4: Simplify right side
    643,466.30x = 317,117,770,631.25
  5. Step 5: Solve for x
    x = 317,117,770,631.25/643,466.30
  6. Step 6: Final answer
    x = 492,827.32

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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.