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Finding the Fourth Proportional to 863,592,624.20, 1,295,388,936.30 and 708,624,428.60

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Solution

The fourth proportional to 863,592,624.20, 1,295,388,936.30 and 708,624,428.60 is: 1,062,936,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,592,624.20 : 1,295,388,936.30 = 708,624,428.60 : x
  2. Step 2: Convert to fraction form
    863,592,624.20/1,295,388,936.30 = 708,624,428.60/x
  3. Step 3: Cross multiply
    863,592,624.20x = 1,295,388,936.30 × 708,624,428.60
  4. Step 4: Simplify right side
    863,592,624.20x = 917,944,244,800,349,312
  5. Step 5: Solve for x
    x = 917,944,244,800,349,312/863,592,624.20
  6. Step 6: Final answer
    x = 1,062,936,642.90

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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.