Home / 912,940.79-1,259,895.38-505,035.59

Finding the Fourth Proportional to 912,940.79, 1,259,895.38 and 505,035.59

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Solution

The fourth proportional to 912,940.79, 1,259,895.38 and 505,035.59 is: 696,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,940.79 : 1,259,895.38 = 505,035.59 : x
  2. Step 2: Convert to fraction form
    912,940.79/1,259,895.38 = 505,035.59/x
  3. Step 3: Cross multiply
    912,940.79x = 1,259,895.38 × 505,035.59
  4. Step 4: Simplify right side
    912,940.79x = 636,291,997,751.92
  5. Step 5: Solve for x
    x = 636,291,997,751.92/912,940.79
  6. Step 6: Final answer
    x = 696,969.63

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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.