Home / 689,905.02-952,068.69-388,099.02

Finding the Fourth Proportional to 689,905.02, 952,068.69 and 388,099.02

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Solution

The fourth proportional to 689,905.02, 952,068.69 and 388,099.02 is: 535,576.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,905.02 : 952,068.69 = 388,099.02 : x
  2. Step 2: Convert to fraction form
    689,905.02/952,068.69 = 388,099.02/x
  3. Step 3: Cross multiply
    689,905.02x = 952,068.69 × 388,099.02
  4. Step 4: Simplify right side
    689,905.02x = 369,496,925,561.68
  5. Step 5: Solve for x
    x = 369,496,925,561.68/689,905.02
  6. Step 6: Final answer
    x = 535,576.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.