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Finding the Fourth Proportional to 869,697.72, 1,199,991.20 and 841,026.16

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Solution

The fourth proportional to 869,697.72, 1,199,991.20 and 841,026.16 is: 1,160,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,697.72 : 1,199,991.20 = 841,026.16 : x
  2. Step 2: Convert to fraction form
    869,697.72/1,199,991.20 = 841,026.16/x
  3. Step 3: Cross multiply
    869,697.72x = 1,199,991.20 × 841,026.16
  4. Step 4: Simplify right side
    869,697.72x = 1,009,223,990,969.79
  5. Step 5: Solve for x
    x = 1,009,223,990,969.79/869,697.72
  6. Step 6: Final answer
    x = 1,160,430.77

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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.