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Finding the Fourth Proportional to 646,209.55, 891,888.76 and 374,277.37

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Solution

The fourth proportional to 646,209.55, 891,888.76 and 374,277.37 is: 516,572.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,209.55 : 891,888.76 = 374,277.37 : x
  2. Step 2: Convert to fraction form
    646,209.55/891,888.76 = 374,277.37/x
  3. Step 3: Cross multiply
    646,209.55x = 891,888.76 × 374,277.37
  4. Step 4: Simplify right side
    646,209.55x = 333,813,778,879.43
  5. Step 5: Solve for x
    x = 333,813,778,879.43/646,209.55
  6. Step 6: Final answer
    x = 516,572.03

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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.