Home / 860,426.81-1,187,390.00-478,445.39

Finding the Fourth Proportional to 860,426.81, 1,187,390.00 and 478,445.39

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Solution

The fourth proportional to 860,426.81, 1,187,390.00 and 478,445.39 is: 660,255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,426.81 : 1,187,390.00 = 478,445.39 : x
  2. Step 2: Convert to fraction form
    860,426.81/1,187,390.00 = 478,445.39/x
  3. Step 3: Cross multiply
    860,426.81x = 1,187,390.00 × 478,445.39
  4. Step 4: Simplify right side
    860,426.81x = 568,101,272,208.35
  5. Step 5: Solve for x
    x = 568,101,272,208.35/860,426.81
  6. Step 6: Final answer
    x = 660,255.19

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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.