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Finding the Fourth Proportional to 864,798,401.70, 1,297,197,602.55 and 856,736,244.90

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Solution

The fourth proportional to 864,798,401.70, 1,297,197,602.55 and 856,736,244.90 is: 1,285,104,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,798,401.70 : 1,297,197,602.55 = 856,736,244.90 : x
  2. Step 2: Convert to fraction form
    864,798,401.70/1,297,197,602.55 = 856,736,244.90/x
  3. Step 3: Cross multiply
    864,798,401.70x = 1,297,197,602.55 × 856,736,244.90
  4. Step 4: Simplify right side
    864,798,401.70x = 1,111,356,202,901,969,536
  5. Step 5: Solve for x
    x = 1,111,356,202,901,969,536/864,798,401.70
  6. Step 6: Final answer
    x = 1,285,104,367.35

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1.5x scale

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.