Home / 660,201,401.70-990,302,102.55-354,091,385.70

Finding the Fourth Proportional to 660,201,401.70, 990,302,102.55 and 354,091,385.70

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Solution

The fourth proportional to 660,201,401.70, 990,302,102.55 and 354,091,385.70 is: 531,137,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,201,401.70 : 990,302,102.55 = 354,091,385.70 : x
  2. Step 2: Convert to fraction form
    660,201,401.70/990,302,102.55 = 354,091,385.70/x
  3. Step 3: Cross multiply
    660,201,401.70x = 990,302,102.55 × 354,091,385.70
  4. Step 4: Simplify right side
    660,201,401.70x = 350,657,443,753,552,960
  5. Step 5: Solve for x
    x = 350,657,443,753,552,960/660,201,401.70
  6. Step 6: Final answer
    x = 531,137,078.55

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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.