Home / 817,328.96-1,127,885.44-449,771.76

Finding the Fourth Proportional to 817,328.96, 1,127,885.44 and 449,771.76

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Solution

The fourth proportional to 817,328.96, 1,127,885.44 and 449,771.76 is: 620,669.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,328.96 : 1,127,885.44 = 449,771.76 : x
  2. Step 2: Convert to fraction form
    817,328.96/1,127,885.44 = 449,771.76/x
  3. Step 3: Cross multiply
    817,328.96x = 1,127,885.44 × 449,771.76
  4. Step 4: Simplify right side
    817,328.96x = 507,291,019,427.17
  5. Step 5: Solve for x
    x = 507,291,019,427.17/817,328.96
  6. Step 6: Final answer
    x = 620,669.33

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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.