Home / 715,128.06-986,464.39-428,482.07

Finding the Fourth Proportional to 715,128.06, 986,464.39 and 428,482.07

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Solution

The fourth proportional to 715,128.06, 986,464.39 and 428,482.07 is: 591,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,128.06 : 986,464.39 = 428,482.07 : x
  2. Step 2: Convert to fraction form
    715,128.06/986,464.39 = 428,482.07/x
  3. Step 3: Cross multiply
    715,128.06x = 986,464.39 × 428,482.07
  4. Step 4: Simplify right side
    715,128.06x = 422,682,302,307.61
  5. Step 5: Solve for x
    x = 422,682,302,307.61/715,128.06
  6. Step 6: Final answer
    x = 591,058.20

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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.