Home / 1,286,124.21-1,774,723.53-742,435.15

Finding the Fourth Proportional to 1,286,124.21, 1,774,723.53 and 742,435.15

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Solution

The fourth proportional to 1,286,124.21, 1,774,723.53 and 742,435.15 is: 1,024,486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,124.21 : 1,774,723.53 = 742,435.15 : x
  2. Step 2: Convert to fraction form
    1,286,124.21/1,774,723.53 = 742,435.15/x
  3. Step 3: Cross multiply
    1,286,124.21x = 1,774,723.53 × 742,435.15
  4. Step 4: Simplify right side
    1,286,124.21x = 1,317,617,130,204.08
  5. Step 5: Solve for x
    x = 1,317,617,130,204.08/1,286,124.21
  6. Step 6: Final answer
    x = 1,024,486.69

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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.