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Finding the Fourth Proportional to 7,728,663.60, 11,592,995.40 and 4,891,978.80

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Solution

The fourth proportional to 7,728,663.60, 11,592,995.40 and 4,891,978.80 is: 7,337,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728,663.60 : 11,592,995.40 = 4,891,978.80 : x
  2. Step 2: Convert to fraction form
    7,728,663.60/11,592,995.40 = 4,891,978.80/x
  3. Step 3: Cross multiply
    7,728,663.60x = 11,592,995.40 × 4,891,978.80
  4. Step 4: Simplify right side
    7,728,663.60x = 56,712,687,725,297.52
  5. Step 5: Solve for x
    x = 56,712,687,725,297.52/7,728,663.60
  6. Step 6: Final answer
    x = 7,337,968.20

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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.