Home / 640,225,971.44-883,241,300.28-428,600,984.34

Finding the Fourth Proportional to 640,225,971.44, 883,241,300.28 and 428,600,984.34

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Solution

The fourth proportional to 640,225,971.44, 883,241,300.28 and 428,600,984.34 is: 591,288,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,225,971.44 : 883,241,300.28 = 428,600,984.34 : x
  2. Step 2: Convert to fraction form
    640,225,971.44/883,241,300.28 = 428,600,984.34/x
  3. Step 3: Cross multiply
    640,225,971.44x = 883,241,300.28 × 428,600,984.34
  4. Step 4: Simplify right side
    640,225,971.44x = 378,558,090,714,668,928
  5. Step 5: Solve for x
    x = 378,558,090,714,668,928/640,225,971.44
  6. Step 6: Final answer
    x = 591,288,244.47

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1.5x scale

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.