Home / 860,324.12-1,187,240.10-478,347.56

Finding the Fourth Proportional to 860,324.12, 1,187,240.10 and 478,347.56

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Solution

The fourth proportional to 860,324.12, 1,187,240.10 and 478,347.56 is: 660,115.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,324.12 : 1,187,240.10 = 478,347.56 : x
  2. Step 2: Convert to fraction form
    860,324.12/1,187,240.10 = 478,347.56/x
  3. Step 3: Cross multiply
    860,324.12x = 1,187,240.10 × 478,347.56
  4. Step 4: Simplify right side
    860,324.12x = 567,913,405,545.52
  5. Step 5: Solve for x
    x = 567,913,405,545.52/860,324.12
  6. Step 6: Final answer
    x = 660,115.64

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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.