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Finding the Fourth Proportional to 631,923.60, 872,054.64 and 345,444.96

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Solution

The fourth proportional to 631,923.60, 872,054.64 and 345,444.96 is: 476,714.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,923.60 : 872,054.64 = 345,444.96 : x
  2. Step 2: Convert to fraction form
    631,923.60/872,054.64 = 345,444.96/x
  3. Step 3: Cross multiply
    631,923.60x = 872,054.64 × 345,444.96
  4. Step 4: Simplify right side
    631,923.60x = 301,246,880,232.61
  5. Step 5: Solve for x
    x = 301,246,880,232.61/631,923.60
  6. Step 6: Final answer
    x = 476,714.08

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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.