Home / 672,764,572.40-1,009,146,858.60-413,137,929.20

Finding the Fourth Proportional to 672,764,572.40, 1,009,146,858.60 and 413,137,929.20

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Solution

The fourth proportional to 672,764,572.40, 1,009,146,858.60 and 413,137,929.20 is: 619,706,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,764,572.40 : 1,009,146,858.60 = 413,137,929.20 : x
  2. Step 2: Convert to fraction form
    672,764,572.40/1,009,146,858.60 = 413,137,929.20/x
  3. Step 3: Cross multiply
    672,764,572.40x = 1,009,146,858.60 × 413,137,929.20
  4. Step 4: Simplify right side
    672,764,572.40x = 416,916,843,420,689,216
  5. Step 5: Solve for x
    x = 416,916,843,420,689,216/672,764,572.40
  6. Step 6: Final answer
    x = 619,706,893.80

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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.