Home / 696,433,521.12-961,085,887.14-378,895,572.06

Finding the Fourth Proportional to 696,433,521.12, 961,085,887.14 and 378,895,572.06

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Solution

The fourth proportional to 696,433,521.12, 961,085,887.14 and 378,895,572.06 is: 522,880,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,433,521.12 : 961,085,887.14 = 378,895,572.06 : x
  2. Step 2: Convert to fraction form
    696,433,521.12/961,085,887.14 = 378,895,572.06/x
  3. Step 3: Cross multiply
    696,433,521.12x = 961,085,887.14 × 378,895,572.06
  4. Step 4: Simplify right side
    696,433,521.12x = 364,151,187,006,702,912
  5. Step 5: Solve for x
    x = 364,151,187,006,702,912/696,433,521.12
  6. Step 6: Final answer
    x = 522,880,039.46

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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.