Home / 422,366,988.47-582,812,863.03-231,577,802.31

Finding the Fourth Proportional to 422,366,988.47, 582,812,863.03 and 231,577,802.31

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Solution

The fourth proportional to 422,366,988.47, 582,812,863.03 and 231,577,802.31 is: 319,547,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,366,988.47 : 582,812,863.03 = 231,577,802.31 : x
  2. Step 2: Convert to fraction form
    422,366,988.47/582,812,863.03 = 231,577,802.31/x
  3. Step 3: Cross multiply
    422,366,988.47x = 582,812,863.03 × 231,577,802.31
  4. Step 4: Simplify right side
    422,366,988.47x = 134,966,521,980,961,472
  5. Step 5: Solve for x
    x = 134,966,521,980,961,472/422,366,988.47
  6. Step 6: Final answer
    x = 319,547,989.47

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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.