Home / 1,422,219,209.18-2,129,078,429.83-860,280,436.78

Finding the Fourth Proportional to 1,422,219,209.18, 2,129,078,429.83 and 860,280,436.78

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Solution

The fourth proportional to 1,422,219,209.18, 2,129,078,429.83 and 860,280,436.78 is: 1,287,849,657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,219,209.18 : 2,129,078,429.83 = 860,280,436.78 : x
  2. Step 2: Convert to fraction form
    1,422,219,209.18/2,129,078,429.83 = 860,280,436.78/x
  3. Step 3: Cross multiply
    1,422,219,209.18x = 2,129,078,429.83 × 860,280,436.78
  4. Step 4: Simplify right side
    1,422,219,209.18x = 1,831,604,521,545,555,712
  5. Step 5: Solve for x
    x = 1,831,604,521,545,555,712/1,422,219,209.18
  6. Step 6: Final answer
    x = 1,287,849,657.58

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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.