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Finding the Fourth Proportional to 424,666.20, 636,999.30 and 291,955.80

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Solution

The fourth proportional to 424,666.20, 636,999.30 and 291,955.80 is: 437,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,666.20 : 636,999.30 = 291,955.80 : x
  2. Step 2: Convert to fraction form
    424,666.20/636,999.30 = 291,955.80/x
  3. Step 3: Cross multiply
    424,666.20x = 636,999.30 × 291,955.80
  4. Step 4: Simplify right side
    424,666.20x = 185,975,640,230.94
  5. Step 5: Solve for x
    x = 185,975,640,230.94/424,666.20
  6. Step 6: Final answer
    x = 437,933.70

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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.