Home / 717,149,774.52-989,656,628.92-399,623,403.60

Finding the Fourth Proportional to 717,149,774.52, 989,656,628.92 and 399,623,403.60

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Solution

The fourth proportional to 717,149,774.52, 989,656,628.92 and 399,623,403.60 is: 551,474,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,149,774.52 : 989,656,628.92 = 399,623,403.60 : x
  2. Step 2: Convert to fraction form
    717,149,774.52/989,656,628.92 = 399,623,403.60/x
  3. Step 3: Cross multiply
    717,149,774.52x = 989,656,628.92 × 399,623,403.60
  4. Step 4: Simplify right side
    717,149,774.52x = 395,489,950,444,312,576
  5. Step 5: Solve for x
    x = 395,489,950,444,312,576/717,149,774.52
  6. Step 6: Final answer
    x = 551,474,691.20

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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.