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Finding the Fourth Proportional to 457,311.30, 684,800.55 and 363,999.30

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Solution

The fourth proportional to 457,311.30, 684,800.55 and 363,999.30 is: 545,070.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,311.30 : 684,800.55 = 363,999.30 : x
  2. Step 2: Convert to fraction form
    457,311.30/684,800.55 = 363,999.30/x
  3. Step 3: Cross multiply
    457,311.30x = 684,800.55 × 363,999.30
  4. Step 4: Simplify right side
    457,311.30x = 249,266,920,839.62
  5. Step 5: Solve for x
    x = 249,266,920,839.62/457,311.30
  6. Step 6: Final answer
    x = 545,070.55

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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.