Home / 639,464,689.64-882,367,345.14-357,172,354.28

Finding the Fourth Proportional to 639,464,689.64, 882,367,345.14 and 357,172,354.28

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Solution

The fourth proportional to 639,464,689.64, 882,367,345.14 and 357,172,354.28 is: 492,845,386.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,464,689.64 : 882,367,345.14 = 357,172,354.28 : x
  2. Step 2: Convert to fraction form
    639,464,689.64/882,367,345.14 = 357,172,354.28/x
  3. Step 3: Cross multiply
    639,464,689.64x = 882,367,345.14 × 357,172,354.28
  4. Step 4: Simplify right side
    639,464,689.64x = 315,157,222,003,447,104
  5. Step 5: Solve for x
    x = 315,157,222,003,447,104/639,464,689.64
  6. Step 6: Final answer
    x = 492,845,386.32

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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.