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Finding the Fourth Proportional to 677,052.84, 934,309.98 and 390,565.56

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Solution

The fourth proportional to 677,052.84, 934,309.98 and 390,565.56 is: 538,967.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,052.84 : 934,309.98 = 390,565.56 : x
  2. Step 2: Convert to fraction form
    677,052.84/934,309.98 = 390,565.56/x
  3. Step 3: Cross multiply
    677,052.84x = 934,309.98 × 390,565.56
  4. Step 4: Simplify right side
    677,052.84x = 364,909,300,552.29
  5. Step 5: Solve for x
    x = 364,909,300,552.29/677,052.84
  6. Step 6: Final answer
    x = 538,967.24

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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.