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Finding the Fourth Proportional to 489,642,045.60, 734,463,068.40 and 126,136,401.60

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Solution

The fourth proportional to 489,642,045.60, 734,463,068.40 and 126,136,401.60 is: 189,204,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,642,045.60 : 734,463,068.40 = 126,136,401.60 : x
  2. Step 2: Convert to fraction form
    489,642,045.60/734,463,068.40 = 126,136,401.60/x
  3. Step 3: Cross multiply
    489,642,045.60x = 734,463,068.40 × 126,136,401.60
  4. Step 4: Simplify right side
    489,642,045.60x = 92,642,528,556,070,656
  5. Step 5: Solve for x
    x = 92,642,528,556,070,656/489,642,045.60
  6. Step 6: Final answer
    x = 189,204,602.40

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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.