Home / 1,455,359,907.60-2,183,039,861.40-420,254,557.20

Finding the Fourth Proportional to 1,455,359,907.60, 2,183,039,861.40 and 420,254,557.20

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Solution

The fourth proportional to 1,455,359,907.60, 2,183,039,861.40 and 420,254,557.20 is: 630,381,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455,359,907.60 : 2,183,039,861.40 = 420,254,557.20 : x
  2. Step 2: Convert to fraction form
    1,455,359,907.60/2,183,039,861.40 = 420,254,557.20/x
  3. Step 3: Cross multiply
    1,455,359,907.60x = 2,183,039,861.40 × 420,254,557.20
  4. Step 4: Simplify right side
    1,455,359,907.60x = 917,432,450,302,606,336
  5. Step 5: Solve for x
    x = 917,432,450,302,606,336/1,455,359,907.60
  6. Step 6: Final answer
    x = 630,381,835.80

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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.