Home / 387,084,909.40-579,831,101.70-195,716,512.60

Finding the Fourth Proportional to 387,084,909.40, 579,831,101.70 and 195,716,512.60

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Solution

The fourth proportional to 387,084,909.40, 579,831,101.70 and 195,716,512.60 is: 293,172,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,084,909.40 : 579,831,101.70 = 195,716,512.60 : x
  2. Step 2: Convert to fraction form
    387,084,909.40/579,831,101.70 = 195,716,512.60/x
  3. Step 3: Cross multiply
    387,084,909.40x = 579,831,101.70 × 195,716,512.60
  4. Step 4: Simplify right side
    387,084,909.40x = 113,482,521,121,739,936
  5. Step 5: Solve for x
    x = 113,482,521,121,739,936/387,084,909.40
  6. Step 6: Final answer
    x = 293,172,165.50

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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.