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Finding the Fourth Proportional to 703,301.61, 970,555.05 and 381,019.89

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Solution

The fourth proportional to 703,301.61, 970,555.05 and 381,019.89 is: 525,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,301.61 : 970,555.05 = 381,019.89 : x
  2. Step 2: Convert to fraction form
    703,301.61/970,555.05 = 381,019.89/x
  3. Step 3: Cross multiply
    703,301.61x = 970,555.05 × 381,019.89
  4. Step 4: Simplify right side
    703,301.61x = 369,800,778,389.95
  5. Step 5: Solve for x
    x = 369,800,778,389.95/703,301.61
  6. Step 6: Final answer
    x = 525,806.81

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Double scale
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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.