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Finding the Fourth Proportional to 675,242.36, 931,730.92 and 388,707.06

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Solution

The fourth proportional to 675,242.36, 931,730.92 and 388,707.06 is: 536,356.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,242.36 : 931,730.92 = 388,707.06 : x
  2. Step 2: Convert to fraction form
    675,242.36/931,730.92 = 388,707.06/x
  3. Step 3: Cross multiply
    675,242.36x = 931,730.92 × 388,707.06
  4. Step 4: Simplify right side
    675,242.36x = 362,170,385,652.53
  5. Step 5: Solve for x
    x = 362,170,385,652.53/675,242.36
  6. Step 6: Final answer
    x = 536,356.14

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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.