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Finding the Fourth Proportional to 562,815,208.75, 776,685,061.70 and 311,935,797.45

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Solution

The fourth proportional to 562,815,208.75, 776,685,061.70 and 311,935,797.45 is: 430,471,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,815,208.75 : 776,685,061.70 = 311,935,797.45 : x
  2. Step 2: Convert to fraction form
    562,815,208.75/776,685,061.70 = 311,935,797.45/x
  3. Step 3: Cross multiply
    562,815,208.75x = 776,685,061.70 × 311,935,797.45
  4. Step 4: Simplify right side
    562,815,208.75x = 242,275,874,088,891,968
  5. Step 5: Solve for x
    x = 242,275,874,088,891,968/562,815,208.75
  6. Step 6: Final answer
    x = 430,471,441.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.