Home / 860,416.02-1,187,325.34-478,434.60

Finding the Fourth Proportional to 860,416.02, 1,187,325.34 and 478,434.60

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Solution

The fourth proportional to 860,416.02, 1,187,325.34 and 478,434.60 is: 660,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,416.02 : 1,187,325.34 = 478,434.60 : x
  2. Step 2: Convert to fraction form
    860,416.02/1,187,325.34 = 478,434.60/x
  3. Step 3: Cross multiply
    860,416.02x = 1,187,325.34 × 478,434.60
  4. Step 4: Simplify right side
    860,416.02x = 568,057,522,916.68
  5. Step 5: Solve for x
    x = 568,057,522,916.68/860,416.02
  6. Step 6: Final answer
    x = 660,212.63

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Double scale
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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.