Home / 729,243,417.63-1,006,355,965.64-399,218,556.63

Finding the Fourth Proportional to 729,243,417.63, 1,006,355,965.64 and 399,218,556.63

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Solution

The fourth proportional to 729,243,417.63, 1,006,355,965.64 and 399,218,556.63 is: 550,921,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,243,417.63 : 1,006,355,965.64 = 399,218,556.63 : x
  2. Step 2: Convert to fraction form
    729,243,417.63/1,006,355,965.64 = 399,218,556.63/x
  3. Step 3: Cross multiply
    729,243,417.63x = 1,006,355,965.64 × 399,218,556.63
  4. Step 4: Simplify right side
    729,243,417.63x = 401,755,976,056,794,560
  5. Step 5: Solve for x
    x = 401,755,976,056,794,560/729,243,417.63
  6. Step 6: Final answer
    x = 550,921,635.14

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1.5x scale

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.