Home / 497,845.53-686,826.12-288,155.49

Finding the Fourth Proportional to 497,845.53, 686,826.12 and 288,155.49

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Solution

The fourth proportional to 497,845.53, 686,826.12 and 288,155.49 is: 397,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,845.53 : 686,826.12 = 288,155.49 : x
  2. Step 2: Convert to fraction form
    497,845.53/686,826.12 = 288,155.49/x
  3. Step 3: Cross multiply
    497,845.53x = 686,826.12 × 288,155.49
  4. Step 4: Simplify right side
    497,845.53x = 197,912,717,153.40
  5. Step 5: Solve for x
    x = 197,912,717,153.40/497,845.53
  6. Step 6: Final answer
    x = 397,538.40

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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.