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Finding the Fourth Proportional to 405,011.60, 607,517.40 and 383,360.30

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Solution

The fourth proportional to 405,011.60, 607,517.40 and 383,360.30 is: 575,040.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,011.60 : 607,517.40 = 383,360.30 : x
  2. Step 2: Convert to fraction form
    405,011.60/607,517.40 = 383,360.30/x
  3. Step 3: Cross multiply
    405,011.60x = 607,517.40 × 383,360.30
  4. Step 4: Simplify right side
    405,011.60x = 232,898,052,719.22
  5. Step 5: Solve for x
    x = 232,898,052,719.22/405,011.60
  6. Step 6: Final answer
    x = 575,040.45

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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.