Home / 999,392.61-1,379,161.80-540,507.18

Finding the Fourth Proportional to 999,392.61, 1,379,161.80 and 540,507.18

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Solution

The fourth proportional to 999,392.61, 1,379,161.80 and 540,507.18 is: 745,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,392.61 : 1,379,161.80 = 540,507.18 : x
  2. Step 2: Convert to fraction form
    999,392.61/1,379,161.80 = 540,507.18/x
  3. Step 3: Cross multiply
    999,392.61x = 1,379,161.80 × 540,507.18
  4. Step 4: Simplify right side
    999,392.61x = 745,446,855,281.72
  5. Step 5: Solve for x
    x = 745,446,855,281.72/999,392.61
  6. Step 6: Final answer
    x = 745,899.91

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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.