Home / 1,318,610,103.60-1,977,915,155.40-398,628,433.20

Finding the Fourth Proportional to 1,318,610,103.60, 1,977,915,155.40 and 398,628,433.20

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Solution

The fourth proportional to 1,318,610,103.60, 1,977,915,155.40 and 398,628,433.20 is: 597,942,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,610,103.60 : 1,977,915,155.40 = 398,628,433.20 : x
  2. Step 2: Convert to fraction form
    1,318,610,103.60/1,977,915,155.40 = 398,628,433.20/x
  3. Step 3: Cross multiply
    1,318,610,103.60x = 1,977,915,155.40 × 398,628,433.20
  4. Step 4: Simplify right side
    1,318,610,103.60x = 788,453,219,399,636,480
  5. Step 5: Solve for x
    x = 788,453,219,399,636,480/1,318,610,103.60
  6. Step 6: Final answer
    x = 597,942,649.80

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1.5x scale

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.