Home / 860,498.76-1,187,348.58-478,515.72

Finding the Fourth Proportional to 860,498.76, 1,187,348.58 and 478,515.72

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Solution

The fourth proportional to 860,498.76, 1,187,348.58 and 478,515.72 is: 660,274.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,498.76 : 1,187,348.58 = 478,515.72 : x
  2. Step 2: Convert to fraction form
    860,498.76/1,187,348.58 = 478,515.72/x
  3. Step 3: Cross multiply
    860,498.76x = 1,187,348.58 × 478,515.72
  4. Step 4: Simplify right side
    860,498.76x = 568,164,960,649.68
  5. Step 5: Solve for x
    x = 568,164,960,649.68/860,498.76
  6. Step 6: Final answer
    x = 660,274.00

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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.