Home / 919,443.80-1,378,509.60-413,590.70

Finding the Fourth Proportional to 919,443.80, 1,378,509.60 and 413,590.70

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Solution

The fourth proportional to 919,443.80, 1,378,509.60 and 413,590.70 is: 620,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,443.80 : 1,378,509.60 = 413,590.70 : x
  2. Step 2: Convert to fraction form
    919,443.80/1,378,509.60 = 413,590.70/x
  3. Step 3: Cross multiply
    919,443.80x = 1,378,509.60 × 413,590.70
  4. Step 4: Simplify right side
    919,443.80x = 570,138,750,420.72
  5. Step 5: Solve for x
    x = 570,138,750,420.72/919,443.80
  6. Step 6: Final answer
    x = 620,090.92

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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.