Home / 715,731,900,252.36-987,731,013,613.86-390,592,185,449.64

Finding the Fourth Proportional to 715,731,900,252.36, 987,731,013,613.86 and 390,592,185,449.64

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Solution

The fourth proportional to 715,731,900,252.36, 987,731,013,613.86 and 390,592,185,449.64 is: 539,028,671,361.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,731,900,252.36 : 987,731,013,613.86 = 390,592,185,449.64 : x
  2. Step 2: Convert to fraction form
    715,731,900,252.36/987,731,013,613.86 = 390,592,185,449.64/x
  3. Step 3: Cross multiply
    715,731,900,252.36x = 987,731,013,613.86 × 390,592,185,449.64
  4. Step 4: Simplify right side
    715,731,900,252.36x = 385,800,015,243,825,716,920,320
  5. Step 5: Solve for x
    x = 385,800,015,243,825,716,920,320/715,731,900,252.36
  6. Step 6: Final answer
    x = 539,028,671,361.16

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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.