Home / 679,340.02-937,468.96-388,941.95

Finding the Fourth Proportional to 679,340.02, 937,468.96 and 388,941.95

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Solution

The fourth proportional to 679,340.02, 937,468.96 and 388,941.95 is: 536,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,340.02 : 937,468.96 = 388,941.95 : x
  2. Step 2: Convert to fraction form
    679,340.02/937,468.96 = 388,941.95/x
  3. Step 3: Cross multiply
    679,340.02x = 937,468.96 × 388,941.95
  4. Step 4: Simplify right side
    679,340.02x = 364,621,005,366.87
  5. Step 5: Solve for x
    x = 364,621,005,366.87/679,340.02
  6. Step 6: Final answer
    x = 536,728.29

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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.