Home / 497,114.28-686,422.80-405,248.40

Finding the Fourth Proportional to 497,114.28, 686,422.80 and 405,248.40

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Solution

The fourth proportional to 497,114.28, 686,422.80 and 405,248.40 is: 559,573.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,114.28 : 686,422.80 = 405,248.40 : x
  2. Step 2: Convert to fraction form
    497,114.28/686,422.80 = 405,248.40/x
  3. Step 3: Cross multiply
    497,114.28x = 686,422.80 × 405,248.40
  4. Step 4: Simplify right side
    497,114.28x = 278,171,741,423.52
  5. Step 5: Solve for x
    x = 278,171,741,423.52/497,114.28
  6. Step 6: Final answer
    x = 559,573.02

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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.