Home / 475,931.68-712,945.74-286,287.40

Finding the Fourth Proportional to 475,931.68, 712,945.74 and 286,287.40

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Solution

The fourth proportional to 475,931.68, 712,945.74 and 286,287.40 is: 428,858.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,931.68 : 712,945.74 = 286,287.40 : x
  2. Step 2: Convert to fraction form
    475,931.68/712,945.74 = 286,287.40/x
  3. Step 3: Cross multiply
    475,931.68x = 712,945.74 × 286,287.40
  4. Step 4: Simplify right side
    475,931.68x = 204,107,382,245.68
  5. Step 5: Solve for x
    x = 204,107,382,245.68/475,931.68
  6. Step 6: Final answer
    x = 428,858.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.