Home / 991,246,351.88-1,487,038,921.90-408,662,127.24

Finding the Fourth Proportional to 991,246,351.88, 1,487,038,921.90 and 408,662,127.24

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Solution

The fourth proportional to 991,246,351.88, 1,487,038,921.90 and 408,662,127.24 is: 613,063,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,246,351.88 : 1,487,038,921.90 = 408,662,127.24 : x
  2. Step 2: Convert to fraction form
    991,246,351.88/1,487,038,921.90 = 408,662,127.24/x
  3. Step 3: Cross multiply
    991,246,351.88x = 1,487,038,921.90 × 408,662,127.24
  4. Step 4: Simplify right side
    991,246,351.88x = 607,696,489,113,828,608
  5. Step 5: Solve for x
    x = 607,696,489,113,828,608/991,246,351.88
  6. Step 6: Final answer
    x = 613,063,027.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.