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Finding the Fourth Proportional to 690,300.90, 952,606.16 and 380,197.53

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Solution

The fourth proportional to 690,300.90, 952,606.16 and 380,197.53 is: 524,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,300.90 : 952,606.16 = 380,197.53 : x
  2. Step 2: Convert to fraction form
    690,300.90/952,606.16 = 380,197.53/x
  3. Step 3: Cross multiply
    690,300.90x = 952,606.16 × 380,197.53
  4. Step 4: Simplify right side
    690,300.90x = 362,178,502,430.77
  5. Step 5: Solve for x
    x = 362,178,502,430.77/690,300.90
  6. Step 6: Final answer
    x = 524,667.58

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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.