Home / 715,129.06-986,465.77-428,483.07

Finding the Fourth Proportional to 715,129.06, 986,465.77 and 428,483.07

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Solution

The fourth proportional to 715,129.06, 986,465.77 and 428,483.07 is: 591,059.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,129.06 : 986,465.77 = 428,483.07 : x
  2. Step 2: Convert to fraction form
    715,129.06/986,465.77 = 428,483.07/x
  3. Step 3: Cross multiply
    715,129.06x = 986,465.77 × 428,483.07
  4. Step 4: Simplify right side
    715,129.06x = 422,683,881,579.51
  5. Step 5: Solve for x
    x = 422,683,881,579.51/715,129.06
  6. Step 6: Final answer
    x = 591,059.58

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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.