Home / 1,385,136.90-2,077,802.55-786,384.90

Finding the Fourth Proportional to 1,385,136.90, 2,077,802.55 and 786,384.90

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Solution

The fourth proportional to 1,385,136.90, 2,077,802.55 and 786,384.90 is: 1,179,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,136.90 : 2,077,802.55 = 786,384.90 : x
  2. Step 2: Convert to fraction form
    1,385,136.90/2,077,802.55 = 786,384.90/x
  3. Step 3: Cross multiply
    1,385,136.90x = 2,077,802.55 × 786,384.90
  4. Step 4: Simplify right side
    1,385,136.90x = 1,633,952,550,501.50
  5. Step 5: Solve for x
    x = 1,633,952,550,501.50/1,385,136.90
  6. Step 6: Final answer
    x = 1,179,632.53

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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.