Home / 913,308.80-1,260,335.16-505,427.85

Finding the Fourth Proportional to 913,308.80, 1,260,335.16 and 505,427.85

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Solution

The fourth proportional to 913,308.80, 1,260,335.16 and 505,427.85 is: 697,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,308.80 : 1,260,335.16 = 505,427.85 : x
  2. Step 2: Convert to fraction form
    913,308.80/1,260,335.16 = 505,427.85/x
  3. Step 3: Cross multiply
    913,308.80x = 1,260,335.16 × 505,427.85
  4. Step 4: Simplify right side
    913,308.80x = 637,008,490,198.21
  5. Step 5: Solve for x
    x = 637,008,490,198.21/913,308.80
  6. Step 6: Final answer
    x = 697,473.29

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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.