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Finding the Fourth Proportional to 514,848,019.20, 772,272,028.80 and 514,848,019.20

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Solution

The fourth proportional to 514,848,019.20, 772,272,028.80 and 514,848,019.20 is: 772,272,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,848,019.20 : 772,272,028.80 = 514,848,019.20 : x
  2. Step 2: Convert to fraction form
    514,848,019.20/772,272,028.80 = 514,848,019.20/x
  3. Step 3: Cross multiply
    514,848,019.20x = 772,272,028.80 × 514,848,019.20
  4. Step 4: Simplify right side
    514,848,019.20x = 397,602,724,311,245,312
  5. Step 5: Solve for x
    x = 397,602,724,311,245,312/514,848,019.20
  6. Step 6: Final answer
    x = 772,272,028.80

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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.