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Finding the Fourth Proportional to 708,168.18, 977,241.53 and 402,243.61

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Solution

The fourth proportional to 708,168.18, 977,241.53 and 402,243.61 is: 555,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,168.18 : 977,241.53 = 402,243.61 : x
  2. Step 2: Convert to fraction form
    708,168.18/977,241.53 = 402,243.61/x
  3. Step 3: Cross multiply
    708,168.18x = 977,241.53 × 402,243.61
  4. Step 4: Simplify right side
    708,168.18x = 393,089,156,414.80
  5. Step 5: Solve for x
    x = 393,089,156,414.80/708,168.18
  6. Step 6: Final answer
    x = 555,078.82

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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.