Home / 1,139,490,508.40-1,709,235,762.60-412,216,780.40

Finding the Fourth Proportional to 1,139,490,508.40, 1,709,235,762.60 and 412,216,780.40

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Solution

The fourth proportional to 1,139,490,508.40, 1,709,235,762.60 and 412,216,780.40 is: 618,325,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,490,508.40 : 1,709,235,762.60 = 412,216,780.40 : x
  2. Step 2: Convert to fraction form
    1,139,490,508.40/1,709,235,762.60 = 412,216,780.40/x
  3. Step 3: Cross multiply
    1,139,490,508.40x = 1,709,235,762.60 × 412,216,780.40
  4. Step 4: Simplify right side
    1,139,490,508.40x = 704,575,663,003,510,656
  5. Step 5: Solve for x
    x = 704,575,663,003,510,656/1,139,490,508.40
  6. Step 6: Final answer
    x = 618,325,170.60

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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.