Home / 858,165,786.70-1,287,248,680.05-514,180,429.90

Finding the Fourth Proportional to 858,165,786.70, 1,287,248,680.05 and 514,180,429.90

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Solution

The fourth proportional to 858,165,786.70, 1,287,248,680.05 and 514,180,429.90 is: 771,270,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,165,786.70 : 1,287,248,680.05 = 514,180,429.90 : x
  2. Step 2: Convert to fraction form
    858,165,786.70/1,287,248,680.05 = 514,180,429.90/x
  3. Step 3: Cross multiply
    858,165,786.70x = 1,287,248,680.05 × 514,180,429.90
  4. Step 4: Simplify right side
    858,165,786.70x = 661,878,079,696,316,544
  5. Step 5: Solve for x
    x = 661,878,079,696,316,544/858,165,786.70
  6. Step 6: Final answer
    x = 771,270,644.85

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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.