Home / 518,168,553.64-715,070,867.28-283,219,078.12

Finding the Fourth Proportional to 518,168,553.64, 715,070,867.28 and 283,219,078.12

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Solution

The fourth proportional to 518,168,553.64, 715,070,867.28 and 283,219,078.12 is: 390,841,378.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,168,553.64 : 715,070,867.28 = 283,219,078.12 : x
  2. Step 2: Convert to fraction form
    518,168,553.64/715,070,867.28 = 283,219,078.12/x
  3. Step 3: Cross multiply
    518,168,553.64x = 715,070,867.28 × 283,219,078.12
  4. Step 4: Simplify right side
    518,168,553.64x = 202,521,711,821,510,464
  5. Step 5: Solve for x
    x = 202,521,711,821,510,464/518,168,553.64
  6. Step 6: Final answer
    x = 390,841,378.54

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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.