Home / 663,510,721.50-915,645,189.60-370,155,289.50

Finding the Fourth Proportional to 663,510,721.50, 915,645,189.60 and 370,155,289.50

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Solution

The fourth proportional to 663,510,721.50, 915,645,189.60 and 370,155,289.50 is: 510,814,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,510,721.50 : 915,645,189.60 = 370,155,289.50 : x
  2. Step 2: Convert to fraction form
    663,510,721.50/915,645,189.60 = 370,155,289.50/x
  3. Step 3: Cross multiply
    663,510,721.50x = 915,645,189.60 × 370,155,289.50
  4. Step 4: Simplify right side
    663,510,721.50x = 338,930,910,235,670,400
  5. Step 5: Solve for x
    x = 338,930,910,235,670,400/663,510,721.50
  6. Step 6: Final answer
    x = 510,814,519.27

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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.