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Finding the Fourth Proportional to 860,613.84, 1,187,630.22 and 478,632.42

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Solution

The fourth proportional to 860,613.84, 1,187,630.22 and 478,632.42 is: 660,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,613.84 : 1,187,630.22 = 478,632.42 : x
  2. Step 2: Convert to fraction form
    860,613.84/1,187,630.22 = 478,632.42/x
  3. Step 3: Cross multiply
    860,613.84x = 1,187,630.22 × 478,632.42
  4. Step 4: Simplify right side
    860,613.84x = 568,438,326,263.73
  5. Step 5: Solve for x
    x = 568,438,326,263.73/860,613.84
  6. Step 6: Final answer
    x = 660,503.35

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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.