Home / 1,126,144,052.76-1,688,033,609-378,900,401.65

Finding the Fourth Proportional to 1,126,144,052.76, 1,688,033,609 and 378,900,401.65

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Solution

The fourth proportional to 1,126,144,052.76, 1,688,033,609 and 378,900,401.65 is: 567,952,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,144,052.76 : 1,688,033,609 = 378,900,401.65 : x
  2. Step 2: Convert to fraction form
    1,126,144,052.76/1,688,033,609 = 378,900,401.65/x
  3. Step 3: Cross multiply
    1,126,144,052.76x = 1,688,033,609 × 378,900,401.65
  4. Step 4: Simplify right side
    1,126,144,052.76x = 639,596,612,448,798,976
  5. Step 5: Solve for x
    x = 639,596,612,448,798,976/1,126,144,052.76
  6. Step 6: Final answer
    x = 567,952,750.70

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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.