Home / 1,245,487.86-1,861,407.60-909,236.58

Finding the Fourth Proportional to 1,245,487.86, 1,861,407.60 and 909,236.58

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Solution

The fourth proportional to 1,245,487.86, 1,861,407.60 and 909,236.58 is: 1,358,873.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,487.86 : 1,861,407.60 = 909,236.58 : x
  2. Step 2: Convert to fraction form
    1,245,487.86/1,861,407.60 = 909,236.58/x
  3. Step 3: Cross multiply
    1,245,487.86x = 1,861,407.60 × 909,236.58
  4. Step 4: Simplify right side
    1,245,487.86x = 1,692,459,880,210.01
  5. Step 5: Solve for x
    x = 1,692,459,880,210.01/1,245,487.86
  6. Step 6: Final answer
    x = 1,358,873.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.