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Finding the Fourth Proportional to 679,751.80, 938,081.54 and 373,851.84

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Solution

The fourth proportional to 679,751.80, 938,081.54 and 373,851.84 is: 515,928.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,751.80 : 938,081.54 = 373,851.84 : x
  2. Step 2: Convert to fraction form
    679,751.80/938,081.54 = 373,851.84/x
  3. Step 3: Cross multiply
    679,751.80x = 938,081.54 × 373,851.84
  4. Step 4: Simplify right side
    679,751.80x = 350,703,509,799.03
  5. Step 5: Solve for x
    x = 350,703,509,799.03/679,751.80
  6. Step 6: Final answer
    x = 515,928.77

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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.