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Finding the Fourth Proportional to 860,145.84, 1,187,041.77 and 478,179

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Solution

The fourth proportional to 860,145.84, 1,187,041.77 and 478,179 is: 659,909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,145.84 : 1,187,041.77 = 478,179 : x
  2. Step 2: Convert to fraction form
    860,145.84/1,187,041.77 = 478,179/x
  3. Step 3: Cross multiply
    860,145.84x = 1,187,041.77 × 478,179
  4. Step 4: Simplify right side
    860,145.84x = 567,618,446,536.83
  5. Step 5: Solve for x
    x = 567,618,446,536.83/860,145.84
  6. Step 6: Final answer
    x = 659,909.54

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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.