Home / 989,533.10-1,388,145.70-989,533.10

Finding the Fourth Proportional to 989,533.10, 1,388,145.70 and 989,533.10

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Solution

The fourth proportional to 989,533.10, 1,388,145.70 and 989,533.10 is: 1,388,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,533.10 : 1,388,145.70 = 989,533.10 : x
  2. Step 2: Convert to fraction form
    989,533.10/1,388,145.70 = 989,533.10/x
  3. Step 3: Cross multiply
    989,533.10x = 1,388,145.70 × 989,533.10
  4. Step 4: Simplify right side
    989,533.10x = 1,373,616,117,772.67
  5. Step 5: Solve for x
    x = 1,373,616,117,772.67/989,533.10
  6. Step 6: Final answer
    x = 1,388,145.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.