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Finding the Fourth Proportional to 703,211.55, 970,411.93 and 412,818.45

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Solution

The fourth proportional to 703,211.55, 970,411.93 and 412,818.45 is: 569,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,211.55 : 970,411.93 = 412,818.45 : x
  2. Step 2: Convert to fraction form
    703,211.55/970,411.93 = 412,818.45/x
  3. Step 3: Cross multiply
    703,211.55x = 970,411.93 × 412,818.45
  4. Step 4: Simplify right side
    703,211.55x = 400,603,948,804.11
  5. Step 5: Solve for x
    x = 400,603,948,804.11/703,211.55
  6. Step 6: Final answer
    x = 569,677.71

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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.