Home / 900,828,005.20-1,351,242,007.80-554,659,147.60

Finding the Fourth Proportional to 900,828,005.20, 1,351,242,007.80 and 554,659,147.60

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Solution

The fourth proportional to 900,828,005.20, 1,351,242,007.80 and 554,659,147.60 is: 831,988,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,828,005.20 : 1,351,242,007.80 = 554,659,147.60 : x
  2. Step 2: Convert to fraction form
    900,828,005.20/1,351,242,007.80 = 554,659,147.60/x
  3. Step 3: Cross multiply
    900,828,005.20x = 1,351,242,007.80 × 554,659,147.60
  4. Step 4: Simplify right side
    900,828,005.20x = 749,478,740,247,660,544
  5. Step 5: Solve for x
    x = 749,478,740,247,660,544/900,828,005.20
  6. Step 6: Final answer
    x = 831,988,721.40

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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.