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Finding the Fourth Proportional to 578,051.98, 865,350.44 and 349,656.40

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Solution

The fourth proportional to 578,051.98, 865,350.44 and 349,656.40 is: 523,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,051.98 : 865,350.44 = 349,656.40 : x
  2. Step 2: Convert to fraction form
    578,051.98/865,350.44 = 349,656.40/x
  3. Step 3: Cross multiply
    578,051.98x = 865,350.44 × 349,656.40
  4. Step 4: Simplify right side
    578,051.98x = 302,575,319,588.82
  5. Step 5: Solve for x
    x = 302,575,319,588.82/578,051.98
  6. Step 6: Final answer
    x = 523,439.64

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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.