Home / 916,689.28-1,265,263.74-626,418.40

Finding the Fourth Proportional to 916,689.28, 1,265,263.74 and 626,418.40

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Solution

The fourth proportional to 916,689.28, 1,265,263.74 and 626,418.40 is: 864,616.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,689.28 : 1,265,263.74 = 626,418.40 : x
  2. Step 2: Convert to fraction form
    916,689.28/1,265,263.74 = 626,418.40/x
  3. Step 3: Cross multiply
    916,689.28x = 1,265,263.74 × 626,418.40
  4. Step 4: Simplify right side
    916,689.28x = 792,584,487,588.82
  5. Step 5: Solve for x
    x = 792,584,487,588.82/916,689.28
  6. Step 6: Final answer
    x = 864,616.29

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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.