Home / 720,200,417.73-993,877,584.95-390,175,556.73

Finding the Fourth Proportional to 720,200,417.73, 993,877,584.95 and 390,175,556.73

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Solution

The fourth proportional to 720,200,417.73, 993,877,584.95 and 390,175,556.73 is: 538,442,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,200,417.73 : 993,877,584.95 = 390,175,556.73 : x
  2. Step 2: Convert to fraction form
    720,200,417.73/993,877,584.95 = 390,175,556.73/x
  3. Step 3: Cross multiply
    720,200,417.73x = 993,877,584.95 × 390,175,556.73
  4. Step 4: Simplify right side
    720,200,417.73x = 387,786,740,029,334,144
  5. Step 5: Solve for x
    x = 387,786,740,029,334,144/720,200,417.73
  6. Step 6: Final answer
    x = 538,442,814.64

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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.