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Finding the Fourth Proportional to 646,264.63, 891,709.86 and 374,316.04

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Solution

The fourth proportional to 646,264.63, 891,709.86 and 374,316.04 is: 516,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,264.63 : 891,709.86 = 374,316.04 : x
  2. Step 2: Convert to fraction form
    646,264.63/891,709.86 = 374,316.04/x
  3. Step 3: Cross multiply
    646,264.63x = 891,709.86 × 374,316.04
  4. Step 4: Simplify right side
    646,264.63x = 333,781,303,624.15
  5. Step 5: Solve for x
    x = 333,781,303,624.15/646,264.63
  6. Step 6: Final answer
    x = 516,477.75

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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.