Home / 860,418.40-1,187,328.61-478,436.98

Finding the Fourth Proportional to 860,418.40, 1,187,328.61 and 478,436.98

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Solution

The fourth proportional to 860,418.40, 1,187,328.61 and 478,436.98 is: 660,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,418.40 : 1,187,328.61 = 478,436.98 : x
  2. Step 2: Convert to fraction form
    860,418.40/1,187,328.61 = 478,436.98/x
  3. Step 3: Cross multiply
    860,418.40x = 1,187,328.61 × 478,436.98
  4. Step 4: Simplify right side
    860,418.40x = 568,061,914,436.00
  5. Step 5: Solve for x
    x = 568,061,914,436.00/860,418.40
  6. Step 6: Final answer
    x = 660,215.91

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1.5x scale

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.