Home / 515,154,240-772,632,794.28-200,020,275.84

Finding the Fourth Proportional to 515,154,240, 772,632,794.28 and 200,020,275.84

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Solution

The fourth proportional to 515,154,240, 772,632,794.28 and 200,020,275.84 is: 299,992,143.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,154,240 : 772,632,794.28 = 200,020,275.84 : x
  2. Step 2: Convert to fraction form
    515,154,240/772,632,794.28 = 200,020,275.84/x
  3. Step 3: Cross multiply
    515,154,240x = 772,632,794.28 × 200,020,275.84
  4. Step 4: Simplify right side
    515,154,240x = 154,542,224,634,915,584
  5. Step 5: Solve for x
    x = 154,542,224,634,915,584/515,154,240
  6. Step 6: Final answer
    x = 299,992,143.39

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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.