Home / 400,875,422-553,198,673.40-235,873,678.64

Finding the Fourth Proportional to 400,875,422, 553,198,673.40 and 235,873,678.64

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Solution

The fourth proportional to 400,875,422, 553,198,673.40 and 235,873,678.64 is: 325,500,140.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,875,422 : 553,198,673.40 = 235,873,678.64 : x
  2. Step 2: Convert to fraction form
    400,875,422/553,198,673.40 = 235,873,678.64/x
  3. Step 3: Cross multiply
    400,875,422x = 553,198,673.40 × 235,873,678.64
  4. Step 4: Simplify right side
    400,875,422x = 130,485,006,113,625,904
  5. Step 5: Solve for x
    x = 130,485,006,113,625,904/400,875,422
  6. Step 6: Final answer
    x = 325,500,140.32

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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.