Home / 999,420.09-1,379,199.74-540,534.71

Finding the Fourth Proportional to 999,420.09, 1,379,199.74 and 540,534.71

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Solution

The fourth proportional to 999,420.09, 1,379,199.74 and 540,534.71 is: 745,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,420.09 : 1,379,199.74 = 540,534.71 : x
  2. Step 2: Convert to fraction form
    999,420.09/1,379,199.74 = 540,534.71/x
  3. Step 3: Cross multiply
    999,420.09x = 1,379,199.74 × 540,534.71
  4. Step 4: Simplify right side
    999,420.09x = 745,505,321,894.30
  5. Step 5: Solve for x
    x = 745,505,321,894.30/999,420.09
  6. Step 6: Final answer
    x = 745,937.90

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1.5x scale

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.