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Finding the Fourth Proportional to 834,389.60, 1,254,208.80 and 818,643.20

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Solution

The fourth proportional to 834,389.60, 1,254,208.80 and 818,643.20 is: 1,230,539.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    834,389.60 : 1,254,208.80 = 818,643.20 : x
  2. Step 2: Convert to fraction form
    834,389.60/1,254,208.80 = 818,643.20/x
  3. Step 3: Cross multiply
    834,389.60x = 1,254,208.80 × 818,643.20
  4. Step 4: Simplify right side
    834,389.60x = 1,026,749,505,500.16
  5. Step 5: Solve for x
    x = 1,026,749,505,500.16/834,389.60
  6. Step 6: Final answer
    x = 1,230,539.67

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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.