Home / 1,313,314.80-1,812,374.40-709,702.80

Finding the Fourth Proportional to 1,313,314.80, 1,812,374.40 and 709,702.80

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Solution

The fourth proportional to 1,313,314.80, 1,812,374.40 and 709,702.80 is: 979,389.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,314.80 : 1,812,374.40 = 709,702.80 : x
  2. Step 2: Convert to fraction form
    1,313,314.80/1,812,374.40 = 709,702.80/x
  3. Step 3: Cross multiply
    1,313,314.80x = 1,812,374.40 × 709,702.80
  4. Step 4: Simplify right side
    1,313,314.80x = 1,286,247,186,328.32
  5. Step 5: Solve for x
    x = 1,286,247,186,328.32/1,313,314.80
  6. Step 6: Final answer
    x = 979,389.85

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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.