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Finding the Fourth Proportional to 706,316,585.38, 974,709,152.83 and 388,770,042.10

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Solution

The fourth proportional to 706,316,585.38, 974,709,152.83 and 388,770,042.10 is: 536,498,400.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,316,585.38 : 974,709,152.83 = 388,770,042.10 : x
  2. Step 2: Convert to fraction form
    706,316,585.38/974,709,152.83 = 388,770,042.10/x
  3. Step 3: Cross multiply
    706,316,585.38x = 974,709,152.83 × 388,770,042.10
  4. Step 4: Simplify right side
    706,316,585.38x = 378,937,718,376,100,928
  5. Step 5: Solve for x
    x = 378,937,718,376,100,928/706,316,585.38
  6. Step 6: Final answer
    x = 536,498,400.61

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Why These Related Problems?

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