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Finding the Fourth Proportional to 561,406.68, 774,741.42 and 303,283.72

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Solution

The fourth proportional to 561,406.68, 774,741.42 and 303,283.72 is: 418,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,406.68 : 774,741.42 = 303,283.72 : x
  2. Step 2: Convert to fraction form
    561,406.68/774,741.42 = 303,283.72/x
  3. Step 3: Cross multiply
    561,406.68x = 774,741.42 × 303,283.72
  4. Step 4: Simplify right side
    561,406.68x = 234,966,459,895.68
  5. Step 5: Solve for x
    x = 234,966,459,895.68/561,406.68
  6. Step 6: Final answer
    x = 418,531.64

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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.