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Finding the Fourth Proportional to 347,717.40, 520,409.70 and 347,717.40

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Solution

The fourth proportional to 347,717.40, 520,409.70 and 347,717.40 is: 520,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,717.40 : 520,409.70 = 347,717.40 : x
  2. Step 2: Convert to fraction form
    347,717.40/520,409.70 = 347,717.40/x
  3. Step 3: Cross multiply
    347,717.40x = 520,409.70 × 347,717.40
  4. Step 4: Simplify right side
    347,717.40x = 180,955,507,818.78
  5. Step 5: Solve for x
    x = 180,955,507,818.78/347,717.40
  6. Step 6: Final answer
    x = 520,409.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.