Home / 913,394.88-1,260,459-505,513.80

Finding the Fourth Proportional to 913,394.88, 1,260,459 and 505,513.80

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Solution

The fourth proportional to 913,394.88, 1,260,459 and 505,513.80 is: 697,594.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,394.88 : 1,260,459 = 505,513.80 : x
  2. Step 2: Convert to fraction form
    913,394.88/1,260,459 = 505,513.80/x
  3. Step 3: Cross multiply
    913,394.88x = 1,260,459 × 505,513.80
  4. Step 4: Simplify right side
    913,394.88x = 637,179,418,834.20
  5. Step 5: Solve for x
    x = 637,179,418,834.20/913,394.88
  6. Step 6: Final answer
    x = 697,594.69

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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.