Home / 1,429,120.40-2,143,692.12-518,946.32

Finding the Fourth Proportional to 1,429,120.40, 2,143,692.12 and 518,946.32

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Solution

The fourth proportional to 1,429,120.40, 2,143,692.12 and 518,946.32 is: 778,423.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,120.40 : 2,143,692.12 = 518,946.32 : x
  2. Step 2: Convert to fraction form
    1,429,120.40/2,143,692.12 = 518,946.32/x
  3. Step 3: Cross multiply
    1,429,120.40x = 2,143,692.12 × 518,946.32
  4. Step 4: Simplify right side
    1,429,120.40x = 1,112,461,136,887.00
  5. Step 5: Solve for x
    x = 1,112,461,136,887.00/1,429,120.40
  6. Step 6: Final answer
    x = 778,423.66

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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.