Home / 386,901,410.94-580,244,386.41-128,136,808.62

Finding the Fourth Proportional to 386,901,410.94, 580,244,386.41 and 128,136,808.62

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Solution

The fourth proportional to 386,901,410.94, 580,244,386.41 and 128,136,808.62 is: 192,169,534.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,901,410.94 : 580,244,386.41 = 128,136,808.62 : x
  2. Step 2: Convert to fraction form
    386,901,410.94/580,244,386.41 = 128,136,808.62/x
  3. Step 3: Cross multiply
    386,901,410.94x = 580,244,386.41 × 128,136,808.62
  4. Step 4: Simplify right side
    386,901,410.94x = 74,350,663,894,247,504
  5. Step 5: Solve for x
    x = 74,350,663,894,247,504/386,901,410.94
  6. Step 6: Final answer
    x = 192,169,534.13

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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.