Home / 730,409.02-1,007,945.54-408,121.78

Finding the Fourth Proportional to 730,409.02, 1,007,945.54 and 408,121.78

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Solution

The fourth proportional to 730,409.02, 1,007,945.54 and 408,121.78 is: 563,197.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,409.02 : 1,007,945.54 = 408,121.78 : x
  2. Step 2: Convert to fraction form
    730,409.02/1,007,945.54 = 408,121.78/x
  3. Step 3: Cross multiply
    730,409.02x = 1,007,945.54 × 408,121.78
  4. Step 4: Simplify right side
    730,409.02x = 411,364,527,927.86
  5. Step 5: Solve for x
    x = 411,364,527,927.86/730,409.02
  6. Step 6: Final answer
    x = 563,197.49

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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.