Home / 918,671.24-1,267,781.05-505,224.36

Finding the Fourth Proportional to 918,671.24, 1,267,781.05 and 505,224.36

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Solution

The fourth proportional to 918,671.24, 1,267,781.05 and 505,224.36 is: 697,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,671.24 : 1,267,781.05 = 505,224.36 : x
  2. Step 2: Convert to fraction form
    918,671.24/1,267,781.05 = 505,224.36/x
  3. Step 3: Cross multiply
    918,671.24x = 1,267,781.05 × 505,224.36
  4. Step 4: Simplify right side
    918,671.24x = 640,513,860,741.35
  5. Step 5: Solve for x
    x = 640,513,860,741.35/918,671.24
  6. Step 6: Final answer
    x = 697,217.72

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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.