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Finding the Fourth Proportional to 625,803,505.60, 939,041,181.60 and 262,334,603.20

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Solution

The fourth proportional to 625,803,505.60, 939,041,181.60 and 262,334,603.20 is: 393,642,722.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,803,505.60 : 939,041,181.60 = 262,334,603.20 : x
  2. Step 2: Convert to fraction form
    625,803,505.60/939,041,181.60 = 262,334,603.20/x
  3. Step 3: Cross multiply
    625,803,505.60x = 939,041,181.60 × 262,334,603.20
  4. Step 4: Simplify right side
    625,803,505.60x = 246,342,995,763,495,136
  5. Step 5: Solve for x
    x = 246,342,995,763,495,136/625,803,505.60
  6. Step 6: Final answer
    x = 393,642,722.61

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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.