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Finding the Fourth Proportional to 646,459.16, 892,113.60 and 374,684.70

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Solution

The fourth proportional to 646,459.16, 892,113.60 and 374,684.70 is: 517,064.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,459.16 : 892,113.60 = 374,684.70 : x
  2. Step 2: Convert to fraction form
    646,459.16/892,113.60 = 374,684.70/x
  3. Step 3: Cross multiply
    646,459.16x = 892,113.60 × 374,684.70
  4. Step 4: Simplify right side
    646,459.16x = 334,261,316,581.92
  5. Step 5: Solve for x
    x = 334,261,316,581.92/646,459.16
  6. Step 6: Final answer
    x = 517,064.86

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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.