Home / 860,506.40-1,187,383.65-478,459.64

Finding the Fourth Proportional to 860,506.40, 1,187,383.65 and 478,459.64

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Solution

The fourth proportional to 860,506.40, 1,187,383.65 and 478,459.64 is: 660,210.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,506.40 : 1,187,383.65 = 478,459.64 : x
  2. Step 2: Convert to fraction form
    860,506.40/1,187,383.65 = 478,459.64/x
  3. Step 3: Cross multiply
    860,506.40x = 1,187,383.65 × 478,459.64
  4. Step 4: Simplify right side
    860,506.40x = 568,115,153,720.89
  5. Step 5: Solve for x
    x = 568,115,153,720.89/860,506.40
  6. Step 6: Final answer
    x = 660,210.26

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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.