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Finding the Fourth Proportional to 675,158.76, 931,717.62 and 388,574.28

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Solution

The fourth proportional to 675,158.76, 931,717.62 and 388,574.28 is: 536,231.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,158.76 : 931,717.62 = 388,574.28 : x
  2. Step 2: Convert to fraction form
    675,158.76/931,717.62 = 388,574.28/x
  3. Step 3: Cross multiply
    675,158.76x = 931,717.62 × 388,574.28
  4. Step 4: Simplify right side
    675,158.76x = 362,041,503,354.81
  5. Step 5: Solve for x
    x = 362,041,503,354.81/675,158.76
  6. Step 6: Final answer
    x = 536,231.66

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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.