Home / 1,315,261.64-1,971,726.06-640,965.80

Finding the Fourth Proportional to 1,315,261.64, 1,971,726.06 and 640,965.80

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Solution

The fourth proportional to 1,315,261.64, 1,971,726.06 and 640,965.80 is: 960,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,261.64 : 1,971,726.06 = 640,965.80 : x
  2. Step 2: Convert to fraction form
    1,315,261.64/1,971,726.06 = 640,965.80/x
  3. Step 3: Cross multiply
    1,315,261.64x = 1,971,726.06 × 640,965.80
  4. Step 4: Simplify right side
    1,315,261.64x = 1,263,808,971,428.75
  5. Step 5: Solve for x
    x = 1,263,808,971,428.75/1,315,261.64
  6. Step 6: Final answer
    x = 960,880.28

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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.