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Finding the Fourth Proportional to 690,568.64, 953,010.60 and 380,483.99

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Solution

The fourth proportional to 690,568.64, 953,010.60 and 380,483.99 is: 525,082.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,568.64 : 953,010.60 = 380,483.99 : x
  2. Step 2: Convert to fraction form
    690,568.64/953,010.60 = 380,483.99/x
  3. Step 3: Cross multiply
    690,568.64x = 953,010.60 × 380,483.99
  4. Step 4: Simplify right side
    690,568.64x = 362,605,275,600.29
  5. Step 5: Solve for x
    x = 362,605,275,600.29/690,568.64
  6. Step 6: Final answer
    x = 525,082.16

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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.