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Finding the Fourth Proportional to 703,207.45, 970,430.93 and 380,917.54

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Solution

The fourth proportional to 703,207.45, 970,430.93 and 380,917.54 is: 525,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,207.45 : 970,430.93 = 380,917.54 : x
  2. Step 2: Convert to fraction form
    703,207.45/970,430.93 = 380,917.54/x
  3. Step 3: Cross multiply
    703,207.45x = 970,430.93 × 380,917.54
  4. Step 4: Simplify right side
    703,207.45x = 369,654,162,595.51
  5. Step 5: Solve for x
    x = 369,654,162,595.51/703,207.45
  6. Step 6: Final answer
    x = 525,668.72

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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.