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Finding the Fourth Proportional to 578,362.51, 798,150.13 and 316,740.81

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Solution

The fourth proportional to 578,362.51, 798,150.13 and 316,740.81 is: 437,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,362.51 : 798,150.13 = 316,740.81 : x
  2. Step 2: Convert to fraction form
    578,362.51/798,150.13 = 316,740.81/x
  3. Step 3: Cross multiply
    578,362.51x = 798,150.13 × 316,740.81
  4. Step 4: Simplify right side
    578,362.51x = 252,806,717,885.95
  5. Step 5: Solve for x
    x = 252,806,717,885.95/578,362.51
  6. Step 6: Final answer
    x = 437,107.72

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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.