Home / 1,325,796,616.34-1,989,032,721.69-393,153,533.60

Finding the Fourth Proportional to 1,325,796,616.34, 1,989,032,721.69 and 393,153,533.60

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Solution

The fourth proportional to 1,325,796,616.34, 1,989,032,721.69 and 393,153,533.60 is: 589,830,471.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,796,616.34 : 1,989,032,721.69 = 393,153,533.60 : x
  2. Step 2: Convert to fraction form
    1,325,796,616.34/1,989,032,721.69 = 393,153,533.60/x
  3. Step 3: Cross multiply
    1,325,796,616.34x = 1,989,032,721.69 × 393,153,533.60
  4. Step 4: Simplify right side
    1,325,796,616.34x = 781,995,242,985,113,984
  5. Step 5: Solve for x
    x = 781,995,242,985,113,984/1,325,796,616.34
  6. Step 6: Final answer
    x = 589,830,471.24

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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.