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Finding the Fourth Proportional to 1,008,699, 1,392,004.62 and 555,999.72

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Solution

The fourth proportional to 1,008,699, 1,392,004.62 and 555,999.72 is: 767,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,699 : 1,392,004.62 = 555,999.72 : x
  2. Step 2: Convert to fraction form
    1,008,699/1,392,004.62 = 555,999.72/x
  3. Step 3: Cross multiply
    1,008,699x = 1,392,004.62 × 555,999.72
  4. Step 4: Simplify right side
    1,008,699x = 773,954,178,958.71
  5. Step 5: Solve for x
    x = 773,954,178,958.71/1,008,699
  6. Step 6: Final answer
    x = 767,279.61

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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.