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Finding the Fourth Proportional to 710,848.46, 980,970.80 and 388,559.84

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Solution

The fourth proportional to 710,848.46, 980,970.80 and 388,559.84 is: 536,212.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,848.46 : 980,970.80 = 388,559.84 : x
  2. Step 2: Convert to fraction form
    710,848.46/980,970.80 = 388,559.84/x
  3. Step 3: Cross multiply
    710,848.46x = 980,970.80 × 388,559.84
  4. Step 4: Simplify right side
    710,848.46x = 381,165,860,516.50
  5. Step 5: Solve for x
    x = 381,165,860,516.50/710,848.46
  6. Step 6: Final answer
    x = 536,212.54

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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.