Home / 860,623.63-1,187,702.67-478,642.21

Finding the Fourth Proportional to 860,623.63, 1,187,702.67 and 478,642.21

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Solution

The fourth proportional to 860,623.63, 1,187,702.67 and 478,642.21 is: 660,549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,623.63 : 1,187,702.67 = 478,642.21 : x
  2. Step 2: Convert to fraction form
    860,623.63/1,187,702.67 = 478,642.21/x
  3. Step 3: Cross multiply
    860,623.63x = 1,187,702.67 × 478,642.21
  4. Step 4: Simplify right side
    860,623.63x = 568,484,630,791.70
  5. Step 5: Solve for x
    x = 568,484,630,791.70/860,623.63
  6. Step 6: Final answer
    x = 660,549.64

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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.