Home / 1,686,321-2,529,295.20-424,149.12

Finding the Fourth Proportional to 1,686,321, 2,529,295.20 and 424,149.12

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Solution

The fourth proportional to 1,686,321, 2,529,295.20 and 424,149.12 is: 636,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,321 : 2,529,295.20 = 424,149.12 : x
  2. Step 2: Convert to fraction form
    1,686,321/2,529,295.20 = 424,149.12/x
  3. Step 3: Cross multiply
    1,686,321x = 2,529,295.20 × 424,149.12
  4. Step 4: Simplify right side
    1,686,321x = 1,072,798,333,300.22
  5. Step 5: Solve for x
    x = 1,072,798,333,300.22/1,686,321
  6. Step 6: Final answer
    x = 636,176.82

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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.