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Finding the Fourth Proportional to 893,484.60, 1,340,477.10 and 361,379.40

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Solution

The fourth proportional to 893,484.60, 1,340,477.10 and 361,379.40 is: 542,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,484.60 : 1,340,477.10 = 361,379.40 : x
  2. Step 2: Convert to fraction form
    893,484.60/1,340,477.10 = 361,379.40/x
  3. Step 3: Cross multiply
    893,484.60x = 1,340,477.10 × 361,379.40
  4. Step 4: Simplify right side
    893,484.60x = 484,420,810,111.74
  5. Step 5: Solve for x
    x = 484,420,810,111.74/893,484.60
  6. Step 6: Final answer
    x = 542,170.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.