Home / 487,035.83-671,674.25-305,764.64

Finding the Fourth Proportional to 487,035.83, 671,674.25 and 305,764.64

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Solution

The fourth proportional to 487,035.83, 671,674.25 and 305,764.64 is: 421,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,035.83 : 671,674.25 = 305,764.64 : x
  2. Step 2: Convert to fraction form
    487,035.83/671,674.25 = 305,764.64/x
  3. Step 3: Cross multiply
    487,035.83x = 671,674.25 × 305,764.64
  4. Step 4: Simplify right side
    487,035.83x = 205,374,237,692.12
  5. Step 5: Solve for x
    x = 205,374,237,692.12/487,035.83
  6. Step 6: Final answer
    x = 421,681.99

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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.