Home / 625,208,015.28-862,778,920.43-357,280,799.30

Finding the Fourth Proportional to 625,208,015.28, 862,778,920.43 and 357,280,799.30

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Solution

The fourth proportional to 625,208,015.28, 862,778,920.43 and 357,280,799.30 is: 493,042,850.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,208,015.28 : 862,778,920.43 = 357,280,799.30 : x
  2. Step 2: Convert to fraction form
    625,208,015.28/862,778,920.43 = 357,280,799.30/x
  3. Step 3: Cross multiply
    625,208,015.28x = 862,778,920.43 × 357,280,799.30
  4. Step 4: Simplify right side
    625,208,015.28x = 308,254,342,310,421,504
  5. Step 5: Solve for x
    x = 308,254,342,310,421,504/625,208,015.28
  6. Step 6: Final answer
    x = 493,042,850.99

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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.