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Finding the Fourth Proportional to 637,236.71, 879,408.19 and 346,858.83

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Solution

The fourth proportional to 637,236.71, 879,408.19 and 346,858.83 is: 478,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,236.71 : 879,408.19 = 346,858.83 : x
  2. Step 2: Convert to fraction form
    637,236.71/879,408.19 = 346,858.83/x
  3. Step 3: Cross multiply
    637,236.71x = 879,408.19 × 346,858.83
  4. Step 4: Simplify right side
    637,236.71x = 305,030,495,875.82
  5. Step 5: Solve for x
    x = 305,030,495,875.82/637,236.71
  6. Step 6: Final answer
    x = 478,676.90

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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.