Home / 750,757,611.60-1,126,136,417.40-428,271,339.60

Finding the Fourth Proportional to 750,757,611.60, 1,126,136,417.40 and 428,271,339.60

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Solution

The fourth proportional to 750,757,611.60, 1,126,136,417.40 and 428,271,339.60 is: 642,407,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,757,611.60 : 1,126,136,417.40 = 428,271,339.60 : x
  2. Step 2: Convert to fraction form
    750,757,611.60/1,126,136,417.40 = 428,271,339.60/x
  3. Step 3: Cross multiply
    750,757,611.60x = 1,126,136,417.40 × 428,271,339.60
  4. Step 4: Simplify right side
    750,757,611.60x = 482,291,952,052,242,816
  5. Step 5: Solve for x
    x = 482,291,952,052,242,816/750,757,611.60
  6. Step 6: Final answer
    x = 642,407,009.40

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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.