Home / 664,368,881.28-916,856,911.20-382,111,399.68

Finding the Fourth Proportional to 664,368,881.28, 916,856,911.20 and 382,111,399.68

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Solution

The fourth proportional to 664,368,881.28, 916,856,911.20 and 382,111,399.68 is: 527,329,752.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,368,881.28 : 916,856,911.20 = 382,111,399.68 : x
  2. Step 2: Convert to fraction form
    664,368,881.28/916,856,911.20 = 382,111,399.68/x
  3. Step 3: Cross multiply
    664,368,881.28x = 916,856,911.20 × 382,111,399.68
  4. Step 4: Simplify right side
    664,368,881.28x = 350,341,477,644,913,472
  5. Step 5: Solve for x
    x = 350,341,477,644,913,472/664,368,881.28
  6. Step 6: Final answer
    x = 527,329,752.37

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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.