Home / 1,299,374.40-1,949,061.60-1,078,190.40

Finding the Fourth Proportional to 1,299,374.40, 1,949,061.60 and 1,078,190.40

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Solution

The fourth proportional to 1,299,374.40, 1,949,061.60 and 1,078,190.40 is: 1,617,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,374.40 : 1,949,061.60 = 1,078,190.40 : x
  2. Step 2: Convert to fraction form
    1,299,374.40/1,949,061.60 = 1,078,190.40/x
  3. Step 3: Cross multiply
    1,299,374.40x = 1,949,061.60 × 1,078,190.40
  4. Step 4: Simplify right side
    1,299,374.40x = 2,101,459,506,128.64
  5. Step 5: Solve for x
    x = 2,101,459,506,128.64/1,299,374.40
  6. Step 6: Final answer
    x = 1,617,285.60

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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.