Home / 631,416,931.41-871,361,003.40-349,178,470.11

Finding the Fourth Proportional to 631,416,931.41, 871,361,003.40 and 349,178,470.11

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Solution

The fourth proportional to 631,416,931.41, 871,361,003.40 and 349,178,470.11 is: 481,869,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,416,931.41 : 871,361,003.40 = 349,178,470.11 : x
  2. Step 2: Convert to fraction form
    631,416,931.41/871,361,003.40 = 349,178,470.11/x
  3. Step 3: Cross multiply
    631,416,931.41x = 871,361,003.40 × 349,178,470.11
  4. Step 4: Simplify right side
    631,416,931.41x = 304,260,502,081,382,976
  5. Step 5: Solve for x
    x = 304,260,502,081,382,976/631,416,931.41
  6. Step 6: Final answer
    x = 481,869,406.64

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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.