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Finding the Fourth Proportional to 572,054.90, 858,082.35 and 439,603.70

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Solution

The fourth proportional to 572,054.90, 858,082.35 and 439,603.70 is: 659,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,054.90 : 858,082.35 = 439,603.70 : x
  2. Step 2: Convert to fraction form
    572,054.90/858,082.35 = 439,603.70/x
  3. Step 3: Cross multiply
    572,054.90x = 858,082.35 × 439,603.70
  4. Step 4: Simplify right side
    572,054.90x = 377,216,175,964.70
  5. Step 5: Solve for x
    x = 377,216,175,964.70/572,054.90
  6. Step 6: Final answer
    x = 659,405.55

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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.