Home / 426,525,443.70-639,788,165.55-369,129,815.70

Finding the Fourth Proportional to 426,525,443.70, 639,788,165.55 and 369,129,815.70

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Solution

The fourth proportional to 426,525,443.70, 639,788,165.55 and 369,129,815.70 is: 553,694,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,525,443.70 : 639,788,165.55 = 369,129,815.70 : x
  2. Step 2: Convert to fraction form
    426,525,443.70/639,788,165.55 = 369,129,815.70/x
  3. Step 3: Cross multiply
    426,525,443.70x = 639,788,165.55 × 369,129,815.70
  4. Step 4: Simplify right side
    426,525,443.70x = 236,164,887,636,512,576
  5. Step 5: Solve for x
    x = 236,164,887,636,512,576/426,525,443.70
  6. Step 6: Final answer
    x = 553,694,723.55

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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.