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Finding the Fourth Proportional to 460,803.97, 690,945.54 and 190,779.40

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Solution

The fourth proportional to 460,803.97, 690,945.54 and 190,779.40 is: 286,061.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,803.97 : 690,945.54 = 190,779.40 : x
  2. Step 2: Convert to fraction form
    460,803.97/690,945.54 = 190,779.40/x
  3. Step 3: Cross multiply
    460,803.97x = 690,945.54 × 190,779.40
  4. Step 4: Simplify right side
    460,803.97x = 131,818,175,553.88
  5. Step 5: Solve for x
    x = 131,818,175,553.88/460,803.97
  6. Step 6: Final answer
    x = 286,061.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.