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Finding the Fourth Proportional to 428,162.02, 590,303.46 and 368,374.90

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Solution

The fourth proportional to 428,162.02, 590,303.46 and 368,374.90 is: 507,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,162.02 : 590,303.46 = 368,374.90 : x
  2. Step 2: Convert to fraction form
    428,162.02/590,303.46 = 368,374.90/x
  3. Step 3: Cross multiply
    428,162.02x = 590,303.46 × 368,374.90
  4. Step 4: Simplify right side
    428,162.02x = 217,452,978,047.15
  5. Step 5: Solve for x
    x = 217,452,978,047.15/428,162.02
  6. Step 6: Final answer
    x = 507,875.45

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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.