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Finding the Fourth Proportional to 708,168.46, 977,241.92 and 402,243.89

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Solution

The fourth proportional to 708,168.46, 977,241.92 and 402,243.89 is: 555,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,168.46 : 977,241.92 = 402,243.89 : x
  2. Step 2: Convert to fraction form
    708,168.46/977,241.92 = 402,243.89/x
  3. Step 3: Cross multiply
    708,168.46x = 977,241.92 × 402,243.89
  4. Step 4: Simplify right side
    708,168.46x = 393,089,591,371.87
  5. Step 5: Solve for x
    x = 393,089,591,371.87/708,168.46
  6. Step 6: Final answer
    x = 555,079.21

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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.