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Finding the Fourth Proportional to 724,017.06, 999,128.28 and 401,720.22

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Solution

The fourth proportional to 724,017.06, 999,128.28 and 401,720.22 is: 554,365.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,017.06 : 999,128.28 = 401,720.22 : x
  2. Step 2: Convert to fraction form
    724,017.06/999,128.28 = 401,720.22/x
  3. Step 3: Cross multiply
    724,017.06x = 999,128.28 × 401,720.22
  4. Step 4: Simplify right side
    724,017.06x = 401,370,032,449.82
  5. Step 5: Solve for x
    x = 401,370,032,449.82/724,017.06
  6. Step 6: Final answer
    x = 554,365.44

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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.