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Finding the Fourth Proportional to 286,622.88, 426,325.80 and 285,663.84

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Solution

The fourth proportional to 286,622.88, 426,325.80 and 285,663.84 is: 424,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,622.88 : 426,325.80 = 285,663.84 : x
  2. Step 2: Convert to fraction form
    286,622.88/426,325.80 = 285,663.84/x
  3. Step 3: Cross multiply
    286,622.88x = 426,325.80 × 285,663.84
  4. Step 4: Simplify right side
    286,622.88x = 121,785,865,119.07
  5. Step 5: Solve for x
    x = 121,785,865,119.07/286,622.88
  6. Step 6: Final answer
    x = 424,899.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.