Home / 860,417.15-1,187,326.89-478,435.73

Finding the Fourth Proportional to 860,417.15, 1,187,326.89 and 478,435.73

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Solution

The fourth proportional to 860,417.15, 1,187,326.89 and 478,435.73 is: 660,214.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,417.15 : 1,187,326.89 = 478,435.73 : x
  2. Step 2: Convert to fraction form
    860,417.15/1,187,326.89 = 478,435.73/x
  3. Step 3: Cross multiply
    860,417.15x = 1,187,326.89 × 478,435.73
  4. Step 4: Simplify right side
    860,417.15x = 568,059,601,429.15
  5. Step 5: Solve for x
    x = 568,059,601,429.15/860,417.15
  6. Step 6: Final answer
    x = 660,214.18

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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.