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Finding the Fourth Proportional to 418,312.40, 626,777.40 and 356,104.40

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Solution

The fourth proportional to 418,312.40, 626,777.40 and 356,104.40 is: 533,568.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,312.40 : 626,777.40 = 356,104.40 : x
  2. Step 2: Convert to fraction form
    418,312.40/626,777.40 = 356,104.40/x
  3. Step 3: Cross multiply
    418,312.40x = 626,777.40 × 356,104.40
  4. Step 4: Simplify right side
    418,312.40x = 223,198,189,960.56
  5. Step 5: Solve for x
    x = 223,198,189,960.56/418,312.40
  6. Step 6: Final answer
    x = 533,568.19

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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.