Home / 913,504.50-1,260,638.69-505,634.45

Finding the Fourth Proportional to 913,504.50, 1,260,638.69 and 505,634.45

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Solution

The fourth proportional to 913,504.50, 1,260,638.69 and 505,634.45 is: 697,776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,504.50 : 1,260,638.69 = 505,634.45 : x
  2. Step 2: Convert to fraction form
    913,504.50/1,260,638.69 = 505,634.45/x
  3. Step 3: Cross multiply
    913,504.50x = 1,260,638.69 × 505,634.45
  4. Step 4: Simplify right side
    913,504.50x = 637,422,341,835.51
  5. Step 5: Solve for x
    x = 637,422,341,835.51/913,504.50
  6. Step 6: Final answer
    x = 697,776.90

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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.