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Finding the Fourth Proportional to 572,987.64, 858,666.40 and 422,040.92

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Solution

The fourth proportional to 572,987.64, 858,666.40 and 422,040.92 is: 632,461.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,987.64 : 858,666.40 = 422,040.92 : x
  2. Step 2: Convert to fraction form
    572,987.64/858,666.40 = 422,040.92/x
  3. Step 3: Cross multiply
    572,987.64x = 858,666.40 × 422,040.92
  4. Step 4: Simplify right side
    572,987.64x = 362,392,357,429.09
  5. Step 5: Solve for x
    x = 362,392,357,429.09/572,987.64
  6. Step 6: Final answer
    x = 632,461.04

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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.