Home / 861,461.76-1,188,675.36-479,478.72

Finding the Fourth Proportional to 861,461.76, 1,188,675.36 and 479,478.72

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Solution

The fourth proportional to 861,461.76, 1,188,675.36 and 479,478.72 is: 661,601.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,461.76 : 1,188,675.36 = 479,478.72 : x
  2. Step 2: Convert to fraction form
    861,461.76/1,188,675.36 = 479,478.72/x
  3. Step 3: Cross multiply
    861,461.76x = 1,188,675.36 × 479,478.72
  4. Step 4: Simplify right side
    861,461.76x = 569,944,540,108.34
  5. Step 5: Solve for x
    x = 569,944,540,108.34/861,461.76
  6. Step 6: Final answer
    x = 661,601.67

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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.