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Finding the Fourth Proportional to 1,058,109.60, 1,584,831.60 and 918,141.60

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Solution

The fourth proportional to 1,058,109.60, 1,584,831.60 and 918,141.60 is: 1,375,188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058,109.60 : 1,584,831.60 = 918,141.60 : x
  2. Step 2: Convert to fraction form
    1,058,109.60/1,584,831.60 = 918,141.60/x
  3. Step 3: Cross multiply
    1,058,109.60x = 1,584,831.60 × 918,141.60
  4. Step 4: Simplify right side
    1,058,109.60x = 1,455,099,820,954.56
  5. Step 5: Solve for x
    x = 1,455,099,820,954.56/1,058,109.60
  6. Step 6: Final answer
    x = 1,375,188.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.