Home / 865,933,815.62-1,298,900,698.32-399,457,224.15

Finding the Fourth Proportional to 865,933,815.62, 1,298,900,698.32 and 399,457,224.15

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Solution

The fourth proportional to 865,933,815.62, 1,298,900,698.32 and 399,457,224.15 is: 599,185,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,933,815.62 : 1,298,900,698.32 = 399,457,224.15 : x
  2. Step 2: Convert to fraction form
    865,933,815.62/1,298,900,698.32 = 399,457,224.15/x
  3. Step 3: Cross multiply
    865,933,815.62x = 1,298,900,698.32 × 399,457,224.15
  4. Step 4: Simplify right side
    865,933,815.62x = 518,855,267,397,403,712
  5. Step 5: Solve for x
    x = 518,855,267,397,403,712/865,933,815.62
  6. Step 6: Final answer
    x = 599,185,824.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.