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Finding the Fourth Proportional to 720,741.83, 994,458.71 and 430,296.86

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Solution

The fourth proportional to 720,741.83, 994,458.71 and 430,296.86 is: 593,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,741.83 : 994,458.71 = 430,296.86 : x
  2. Step 2: Convert to fraction form
    720,741.83/994,458.71 = 430,296.86/x
  3. Step 3: Cross multiply
    720,741.83x = 994,458.71 × 430,296.86
  4. Step 4: Simplify right side
    720,741.83x = 427,912,458,161.17
  5. Step 5: Solve for x
    x = 427,912,458,161.17/720,741.83
  6. Step 6: Final answer
    x = 593,711.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.