Home / 647,356,000.40-971,034,000.60-642,821,037.20

Finding the Fourth Proportional to 647,356,000.40, 971,034,000.60 and 642,821,037.20

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Solution

The fourth proportional to 647,356,000.40, 971,034,000.60 and 642,821,037.20 is: 964,231,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,356,000.40 : 971,034,000.60 = 642,821,037.20 : x
  2. Step 2: Convert to fraction form
    647,356,000.40/971,034,000.60 = 642,821,037.20/x
  3. Step 3: Cross multiply
    647,356,000.40x = 971,034,000.60 × 642,821,037.20
  4. Step 4: Simplify right side
    647,356,000.40x = 624,201,083,422,157,440
  5. Step 5: Solve for x
    x = 624,201,083,422,157,440/647,356,000.40
  6. Step 6: Final answer
    x = 964,231,555.80

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Similar ratio
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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.