Home / 687,817,185.07-949,227,565.20-517,967,362.07

Finding the Fourth Proportional to 687,817,185.07, 949,227,565.20 and 517,967,362.07

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Solution

The fourth proportional to 687,817,185.07, 949,227,565.20 and 517,967,362.07 is: 714,824,968.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,817,185.07 : 949,227,565.20 = 517,967,362.07 : x
  2. Step 2: Convert to fraction form
    687,817,185.07/949,227,565.20 = 517,967,362.07/x
  3. Step 3: Cross multiply
    687,817,185.07x = 949,227,565.20 × 517,967,362.07
  4. Step 4: Simplify right side
    687,817,185.07x = 491,668,897,950,772,928
  5. Step 5: Solve for x
    x = 491,668,897,950,772,928/687,817,185.07
  6. Step 6: Final answer
    x = 714,824,968.94

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Double scale
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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.