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Finding the Fourth Proportional to 720,740.83, 994,457.33 and 430,295.86

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Solution

The fourth proportional to 720,740.83, 994,457.33 and 430,295.86 is: 593,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,740.83 : 994,457.33 = 430,295.86 : x
  2. Step 2: Convert to fraction form
    720,740.83/994,457.33 = 430,295.86/x
  3. Step 3: Cross multiply
    720,740.83x = 994,457.33 × 430,295.86
  4. Step 4: Simplify right side
    720,740.83x = 427,910,869,894.17
  5. Step 5: Solve for x
    x = 427,910,869,894.17/720,740.83
  6. Step 6: Final answer
    x = 593,709.77

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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.