Home / 999,430.41-1,378,897.31-611,840.55

Finding the Fourth Proportional to 999,430.41, 1,378,897.31 and 611,840.55

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Solution

The fourth proportional to 999,430.41, 1,378,897.31 and 611,840.55 is: 844,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,430.41 : 1,378,897.31 = 611,840.55 : x
  2. Step 2: Convert to fraction form
    999,430.41/1,378,897.31 = 611,840.55/x
  3. Step 3: Cross multiply
    999,430.41x = 1,378,897.31 × 611,840.55
  4. Step 4: Simplify right side
    999,430.41x = 843,665,285,484.72
  5. Step 5: Solve for x
    x = 843,665,285,484.72/999,430.41
  6. Step 6: Final answer
    x = 844,146.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.