Home / 1,255,420.20-1,883,043.90-402,479.40

Finding the Fourth Proportional to 1,255,420.20, 1,883,043.90 and 402,479.40

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Solution

The fourth proportional to 1,255,420.20, 1,883,043.90 and 402,479.40 is: 603,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,420.20 : 1,883,043.90 = 402,479.40 : x
  2. Step 2: Convert to fraction form
    1,255,420.20/1,883,043.90 = 402,479.40/x
  3. Step 3: Cross multiply
    1,255,420.20x = 1,883,043.90 × 402,479.40
  4. Step 4: Simplify right side
    1,255,420.20x = 757,886,379,045.66
  5. Step 5: Solve for x
    x = 757,886,379,045.66/1,255,420.20
  6. Step 6: Final answer
    x = 603,691.40

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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.