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Finding the Fourth Proportional to 690,539.96, 952,970.88 and 380,455.15

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Solution

The fourth proportional to 690,539.96, 952,970.88 and 380,455.15 is: 525,042.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,539.96 : 952,970.88 = 380,455.15 : x
  2. Step 2: Convert to fraction form
    690,539.96/952,970.88 = 380,455.15/x
  3. Step 3: Cross multiply
    690,539.96x = 952,970.88 × 380,455.15
  4. Step 4: Simplify right side
    690,539.96x = 362,562,679,096.03
  5. Step 5: Solve for x
    x = 362,562,679,096.03/690,539.96
  6. Step 6: Final answer
    x = 525,042.29

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1.5x scale

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.