Home / 505,490,946.40-758,236,419.60-287,056,885.60

Finding the Fourth Proportional to 505,490,946.40, 758,236,419.60 and 287,056,885.60

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Solution

The fourth proportional to 505,490,946.40, 758,236,419.60 and 287,056,885.60 is: 430,585,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,490,946.40 : 758,236,419.60 = 287,056,885.60 : x
  2. Step 2: Convert to fraction form
    505,490,946.40/758,236,419.60 = 287,056,885.60/x
  3. Step 3: Cross multiply
    505,490,946.40x = 758,236,419.60 × 287,056,885.60
  4. Step 4: Simplify right side
    505,490,946.40x = 217,656,985,158,870,816
  5. Step 5: Solve for x
    x = 217,656,985,158,870,816/505,490,946.40
  6. Step 6: Final answer
    x = 430,585,328.40

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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.