Home / 999,021.60-1,498,726.80-430,401.60

Finding the Fourth Proportional to 999,021.60, 1,498,726.80 and 430,401.60

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Solution

The fourth proportional to 999,021.60, 1,498,726.80 and 430,401.60 is: 645,686.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,021.60 : 1,498,726.80 = 430,401.60 : x
  2. Step 2: Convert to fraction form
    999,021.60/1,498,726.80 = 430,401.60/x
  3. Step 3: Cross multiply
    999,021.60x = 1,498,726.80 × 430,401.60
  4. Step 4: Simplify right side
    999,021.60x = 645,054,412,682.88
  5. Step 5: Solve for x
    x = 645,054,412,682.88/999,021.60
  6. Step 6: Final answer
    x = 645,686.15

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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.