Home / 860,711.64-1,187,778.90-478,738.45

Finding the Fourth Proportional to 860,711.64, 1,187,778.90 and 478,738.45

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Solution

The fourth proportional to 860,711.64, 1,187,778.90 and 478,738.45 is: 660,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,711.64 : 1,187,778.90 = 478,738.45 : x
  2. Step 2: Convert to fraction form
    860,711.64/1,187,778.90 = 478,738.45/x
  3. Step 3: Cross multiply
    860,711.64x = 1,187,778.90 × 478,738.45
  4. Step 4: Simplify right side
    860,711.64x = 568,635,429,528.71
  5. Step 5: Solve for x
    x = 568,635,429,528.71/860,711.64
  6. Step 6: Final answer
    x = 660,657.30

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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.