Home / 780,637.50-1,077,279.75-422,941.50

Finding the Fourth Proportional to 780,637.50, 1,077,279.75 and 422,941.50

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Solution

The fourth proportional to 780,637.50, 1,077,279.75 and 422,941.50 is: 583,659.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,637.50 : 1,077,279.75 = 422,941.50 : x
  2. Step 2: Convert to fraction form
    780,637.50/1,077,279.75 = 422,941.50/x
  3. Step 3: Cross multiply
    780,637.50x = 1,077,279.75 × 422,941.50
  4. Step 4: Simplify right side
    780,637.50x = 455,626,313,384.63
  5. Step 5: Solve for x
    x = 455,626,313,384.63/780,637.50
  6. Step 6: Final answer
    x = 583,659.27

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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.