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Finding the Fourth Proportional to 690,395.72, 952,719.53 and 384,485.00

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Solution

The fourth proportional to 690,395.72, 952,719.53 and 384,485.00 is: 530,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,395.72 : 952,719.53 = 384,485.00 : x
  2. Step 2: Convert to fraction form
    690,395.72/952,719.53 = 384,485.00/x
  3. Step 3: Cross multiply
    690,395.72x = 952,719.53 × 384,485.00
  4. Step 4: Simplify right side
    690,395.72x = 366,306,365,378.73
  5. Step 5: Solve for x
    x = 366,306,365,378.73/690,395.72
  6. Step 6: Final answer
    x = 530,574.50

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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.