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Finding the Fourth Proportional to 570,778.93, 788,204.40 and 427,289.86

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Solution

The fourth proportional to 570,778.93, 788,204.40 and 427,289.86 is: 590,056.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,778.93 : 788,204.40 = 427,289.86 : x
  2. Step 2: Convert to fraction form
    570,778.93/788,204.40 = 427,289.86/x
  3. Step 3: Cross multiply
    570,778.93x = 788,204.40 × 427,289.86
  4. Step 4: Simplify right side
    570,778.93x = 336,791,747,727.38
  5. Step 5: Solve for x
    x = 336,791,747,727.38/570,778.93
  6. Step 6: Final answer
    x = 590,056.38

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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.