Home / 620,856,574.80-931,284,862.20-427,364,811.60

Finding the Fourth Proportional to 620,856,574.80, 931,284,862.20 and 427,364,811.60

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Solution

The fourth proportional to 620,856,574.80, 931,284,862.20 and 427,364,811.60 is: 641,047,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,856,574.80 : 931,284,862.20 = 427,364,811.60 : x
  2. Step 2: Convert to fraction form
    620,856,574.80/931,284,862.20 = 427,364,811.60/x
  3. Step 3: Cross multiply
    620,856,574.80x = 931,284,862.20 × 427,364,811.60
  4. Step 4: Simplify right side
    620,856,574.80x = 397,998,379,680,035,008
  5. Step 5: Solve for x
    x = 397,998,379,680,035,008/620,856,574.80
  6. Step 6: Final answer
    x = 641,047,217.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.