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Finding the Fourth Proportional to 472,519.80, 708,779.70 and 354,421.80

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Solution

The fourth proportional to 472,519.80, 708,779.70 and 354,421.80 is: 531,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,519.80 : 708,779.70 = 354,421.80 : x
  2. Step 2: Convert to fraction form
    472,519.80/708,779.70 = 354,421.80/x
  3. Step 3: Cross multiply
    472,519.80x = 708,779.70 × 354,421.80
  4. Step 4: Simplify right side
    472,519.80x = 251,206,977,077.46
  5. Step 5: Solve for x
    x = 251,206,977,077.46/472,519.80
  6. Step 6: Final answer
    x = 531,632.70

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Similar ratio
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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.