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Finding the Fourth Proportional to 690,125.94, 952,291.08 and 384,129

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Solution

The fourth proportional to 690,125.94, 952,291.08 and 384,129 is: 530,051.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,125.94 : 952,291.08 = 384,129 : x
  2. Step 2: Convert to fraction form
    690,125.94/952,291.08 = 384,129/x
  3. Step 3: Cross multiply
    690,125.94x = 952,291.08 × 384,129
  4. Step 4: Simplify right side
    690,125.94x = 365,802,620,269.32
  5. Step 5: Solve for x
    x = 365,802,620,269.32/690,125.94
  6. Step 6: Final answer
    x = 530,051.98

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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.