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Finding the Fourth Proportional to 703,207.95, 970,431.62 and 380,918.04

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Solution

The fourth proportional to 703,207.95, 970,431.62 and 380,918.04 is: 525,669.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,207.95 : 970,431.62 = 380,918.04 : x
  2. Step 2: Convert to fraction form
    703,207.95/970,431.62 = 380,918.04/x
  3. Step 3: Cross multiply
    703,207.95x = 970,431.62 × 380,918.04
  4. Step 4: Simplify right side
    703,207.95x = 369,654,908,739.84
  5. Step 5: Solve for x
    x = 369,654,908,739.84/703,207.95
  6. Step 6: Final answer
    x = 525,669.41

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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.