Home / 860,419.65-1,187,330.34-478,438.23

Finding the Fourth Proportional to 860,419.65, 1,187,330.34 and 478,438.23

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Solution

The fourth proportional to 860,419.65, 1,187,330.34 and 478,438.23 is: 660,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,419.65 : 1,187,330.34 = 478,438.23 : x
  2. Step 2: Convert to fraction form
    860,419.65/1,187,330.34 = 478,438.23/x
  3. Step 3: Cross multiply
    860,419.65x = 1,187,330.34 × 478,438.23
  4. Step 4: Simplify right side
    860,419.65x = 568,064,226,294.90
  5. Step 5: Solve for x
    x = 568,064,226,294.90/860,419.65
  6. Step 6: Final answer
    x = 660,217.63

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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.