Home / 407,913,719.90-611,869,814.31-127,816,076.30

Finding the Fourth Proportional to 407,913,719.90, 611,869,814.31 and 127,816,076.30

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Solution

The fourth proportional to 407,913,719.90, 611,869,814.31 and 127,816,076.30 is: 191,723,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,913,719.90 : 611,869,814.31 = 127,816,076.30 : x
  2. Step 2: Convert to fraction form
    407,913,719.90/611,869,814.31 = 127,816,076.30/x
  3. Step 3: Cross multiply
    407,913,719.90x = 611,869,814.31 × 127,816,076.30
  4. Step 4: Simplify right side
    407,913,719.90x = 78,206,798,871,513,776
  5. Step 5: Solve for x
    x = 78,206,798,871,513,776/407,913,719.90
  6. Step 6: Final answer
    x = 191,723,874.57

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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.