Home / 1,286,125.25-1,774,724.91-742,436.20

Finding the Fourth Proportional to 1,286,125.25, 1,774,724.91 and 742,436.20

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Solution

The fourth proportional to 1,286,125.25, 1,774,724.91 and 742,436.20 is: 1,024,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,125.25 : 1,774,724.91 = 742,436.20 : x
  2. Step 2: Convert to fraction form
    1,286,125.25/1,774,724.91 = 742,436.20/x
  3. Step 3: Cross multiply
    1,286,125.25x = 1,774,724.91 × 742,436.20
  4. Step 4: Simplify right side
    1,286,125.25x = 1,317,620,018,225.74
  5. Step 5: Solve for x
    x = 1,317,620,018,225.74/1,286,125.25
  6. Step 6: Final answer
    x = 1,024,488.10

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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.