Home / 672,378,148.60-1,006,498,640.75-438,705,706.03

Finding the Fourth Proportional to 672,378,148.60, 1,006,498,640.75 and 438,705,706.03

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Solution

The fourth proportional to 672,378,148.60, 1,006,498,640.75 and 438,705,706.03 is: 656,708,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,378,148.60 : 1,006,498,640.75 = 438,705,706.03 : x
  2. Step 2: Convert to fraction form
    672,378,148.60/1,006,498,640.75 = 438,705,706.03/x
  3. Step 3: Cross multiply
    672,378,148.60x = 1,006,498,640.75 × 438,705,706.03
  4. Step 4: Simplify right side
    672,378,148.60x = 441,556,696,803,754,304
  5. Step 5: Solve for x
    x = 441,556,696,803,754,304/672,378,148.60
  6. Step 6: Final answer
    x = 656,708,873.90

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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.