Home / 860,616.61-1,187,693.01-478,635.19

Finding the Fourth Proportional to 860,616.61, 1,187,693.01 and 478,635.19

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Solution

The fourth proportional to 860,616.61, 1,187,693.01 and 478,635.19 is: 660,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,616.61 : 1,187,693.01 = 478,635.19 : x
  2. Step 2: Convert to fraction form
    860,616.61/1,187,693.01 = 478,635.19/x
  3. Step 3: Cross multiply
    860,616.61x = 1,187,693.01 × 478,635.19
  4. Step 4: Simplify right side
    860,616.61x = 568,471,666,533.79
  5. Step 5: Solve for x
    x = 568,471,666,533.79/860,616.61
  6. Step 6: Final answer
    x = 660,539.97

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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.