Home / 429,891,452.42-644,875,903.59-138,765,477.38

Finding the Fourth Proportional to 429,891,452.42, 644,875,903.59 and 138,765,477.38

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Solution

The fourth proportional to 429,891,452.42, 644,875,903.59 and 138,765,477.38 is: 208,160,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,891,452.42 : 644,875,903.59 = 138,765,477.38 : x
  2. Step 2: Convert to fraction form
    429,891,452.42/644,875,903.59 = 138,765,477.38/x
  3. Step 3: Cross multiply
    429,891,452.42x = 644,875,903.59 × 138,765,477.38
  4. Step 4: Simplify right side
    429,891,452.42x = 89,486,512,612,525,200
  5. Step 5: Solve for x
    x = 89,486,512,612,525,200/429,891,452.42
  6. Step 6: Final answer
    x = 208,160,716.17

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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.