Home / 690,221,679.13-952,529,422.23-408,205,869.47

Finding the Fourth Proportional to 690,221,679.13, 952,529,422.23 and 408,205,869.47

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Solution

The fourth proportional to 690,221,679.13, 952,529,422.23 and 408,205,869.47 is: 563,338,001.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,221,679.13 : 952,529,422.23 = 408,205,869.47 : x
  2. Step 2: Convert to fraction form
    690,221,679.13/952,529,422.23 = 408,205,869.47/x
  3. Step 3: Cross multiply
    690,221,679.13x = 952,529,422.23 × 408,205,869.47
  4. Step 4: Simplify right side
    690,221,679.13x = 388,828,100,995,963,264
  5. Step 5: Solve for x
    x = 388,828,100,995,963,264/690,221,679.13
  6. Step 6: Final answer
    x = 563,338,001.04

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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.