Home / 660,280.23-911,403.77-388,336.50

Finding the Fourth Proportional to 660,280.23, 911,403.77 and 388,336.50

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Solution

The fourth proportional to 660,280.23, 911,403.77 and 388,336.50 is: 536,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,280.23 : 911,403.77 = 388,336.50 : x
  2. Step 2: Convert to fraction form
    660,280.23/911,403.77 = 388,336.50/x
  3. Step 3: Cross multiply
    660,280.23x = 911,403.77 × 388,336.50
  4. Step 4: Simplify right side
    660,280.23x = 353,931,348,186.92
  5. Step 5: Solve for x
    x = 353,931,348,186.92/660,280.23
  6. Step 6: Final answer
    x = 536,032.02

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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.