Home / 913,318.28-1,260,348.27-505,437.38

Finding the Fourth Proportional to 913,318.28, 1,260,348.27 and 505,437.38

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Solution

The fourth proportional to 913,318.28, 1,260,348.27 and 505,437.38 is: 697,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,318.28 : 1,260,348.27 = 505,437.38 : x
  2. Step 2: Convert to fraction form
    913,318.28/1,260,348.27 = 505,437.38/x
  3. Step 3: Cross multiply
    913,318.28x = 1,260,348.27 × 505,437.38
  4. Step 4: Simplify right side
    913,318.28x = 637,027,127,476.33
  5. Step 5: Solve for x
    x = 637,027,127,476.33/913,318.28
  6. Step 6: Final answer
    x = 697,486.45

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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.