Home / 918,536.72-1,267,617.20-505,107.41

Finding the Fourth Proportional to 918,536.72, 1,267,617.20 and 505,107.41

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Solution

The fourth proportional to 918,536.72, 1,267,617.20 and 505,107.41 is: 697,068.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,536.72 : 1,267,617.20 = 505,107.41 : x
  2. Step 2: Convert to fraction form
    918,536.72/1,267,617.20 = 505,107.41/x
  3. Step 3: Cross multiply
    918,536.72x = 1,267,617.20 × 505,107.41
  4. Step 4: Simplify right side
    918,536.72x = 640,282,831,899.83
  5. Step 5: Solve for x
    x = 640,282,831,899.83/918,536.72
  6. Step 6: Final answer
    x = 697,068.31

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1.5x scale

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.