Home / 1,286,124.25-1,774,723.53-742,435.20

Finding the Fourth Proportional to 1,286,124.25, 1,774,723.53 and 742,435.20

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Solution

The fourth proportional to 1,286,124.25, 1,774,723.53 and 742,435.20 is: 1,024,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,124.25 : 1,774,723.53 = 742,435.20 : x
  2. Step 2: Convert to fraction form
    1,286,124.25/1,774,723.53 = 742,435.20/x
  3. Step 3: Cross multiply
    1,286,124.25x = 1,774,723.53 × 742,435.20
  4. Step 4: Simplify right side
    1,286,124.25x = 1,317,617,218,940.26
  5. Step 5: Solve for x
    x = 1,317,617,218,940.26/1,286,124.25
  6. Step 6: Final answer
    x = 1,024,486.72

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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.