Home / 545,218.20-816,077.70-426,245.40

Finding the Fourth Proportional to 545,218.20, 816,077.70 and 426,245.40

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Solution

The fourth proportional to 545,218.20, 816,077.70 and 426,245.40 is: 638,000.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,218.20 : 816,077.70 = 426,245.40 : x
  2. Step 2: Convert to fraction form
    545,218.20/816,077.70 = 426,245.40/x
  3. Step 3: Cross multiply
    545,218.20x = 816,077.70 × 426,245.40
  4. Step 4: Simplify right side
    545,218.20x = 347,849,365,667.58
  5. Step 5: Solve for x
    x = 347,849,365,667.58/545,218.20
  6. Step 6: Final answer
    x = 638,000.28

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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.