Home / 1,276,412.80-1,914,619.20-709,542.40

Finding the Fourth Proportional to 1,276,412.80, 1,914,619.20 and 709,542.40

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Solution

The fourth proportional to 1,276,412.80, 1,914,619.20 and 709,542.40 is: 1,064,313.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,412.80 : 1,914,619.20 = 709,542.40 : x
  2. Step 2: Convert to fraction form
    1,276,412.80/1,914,619.20 = 709,542.40/x
  3. Step 3: Cross multiply
    1,276,412.80x = 1,914,619.20 × 709,542.40
  4. Step 4: Simplify right side
    1,276,412.80x = 1,358,503,502,254.08
  5. Step 5: Solve for x
    x = 1,358,503,502,254.08/1,276,412.80
  6. Step 6: Final answer
    x = 1,064,313.60

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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.