Home / 647,356,002.40-971,034,003.60-642,821,039.20

Finding the Fourth Proportional to 647,356,002.40, 971,034,003.60 and 642,821,039.20

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Solution

The fourth proportional to 647,356,002.40, 971,034,003.60 and 642,821,039.20 is: 964,231,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,356,002.40 : 971,034,003.60 = 642,821,039.20 : x
  2. Step 2: Convert to fraction form
    647,356,002.40/971,034,003.60 = 642,821,039.20/x
  3. Step 3: Cross multiply
    647,356,002.40x = 971,034,003.60 × 642,821,039.20
  4. Step 4: Simplify right side
    647,356,002.40x = 624,201,087,292,688,640
  5. Step 5: Solve for x
    x = 624,201,087,292,688,640/647,356,002.40
  6. Step 6: Final answer
    x = 964,231,558.80

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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.