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Finding the Fourth Proportional to 703,208.07, 970,431.80 and 380,918.17

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Solution

The fourth proportional to 703,208.07, 970,431.80 and 380,918.17 is: 525,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,208.07 : 970,431.80 = 380,918.17 : x
  2. Step 2: Convert to fraction form
    703,208.07/970,431.80 = 380,918.17/x
  3. Step 3: Cross multiply
    703,208.07x = 970,431.80 × 380,918.17
  4. Step 4: Simplify right side
    703,208.07x = 369,655,105,365.81
  5. Step 5: Solve for x
    x = 369,655,105,365.81/703,208.07
  6. Step 6: Final answer
    x = 525,669.60

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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.