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Finding the Fourth Proportional to 545,674.20, 818,657.10 and 486,916.80

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Solution

The fourth proportional to 545,674.20, 818,657.10 and 486,916.80 is: 730,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,674.20 : 818,657.10 = 486,916.80 : x
  2. Step 2: Convert to fraction form
    545,674.20/818,657.10 = 486,916.80/x
  3. Step 3: Cross multiply
    545,674.20x = 818,657.10 × 486,916.80
  4. Step 4: Simplify right side
    545,674.20x = 398,617,895,429.28
  5. Step 5: Solve for x
    x = 398,617,895,429.28/545,674.20
  6. Step 6: Final answer
    x = 730,505.30

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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.