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Finding the Fourth Proportional to 347,718.40, 520,411.20 and 347,718.40

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Solution

The fourth proportional to 347,718.40, 520,411.20 and 347,718.40 is: 520,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,718.40 : 520,411.20 = 347,718.40 : x
  2. Step 2: Convert to fraction form
    347,718.40/520,411.20 = 347,718.40/x
  3. Step 3: Cross multiply
    347,718.40x = 520,411.20 × 347,718.40
  4. Step 4: Simplify right side
    347,718.40x = 180,956,549,806.08
  5. Step 5: Solve for x
    x = 180,956,549,806.08/347,718.40
  6. Step 6: Final answer
    x = 520,411.20

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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.