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Finding the Fourth Proportional to 634,448.12, 875,562.96 and 347,980.28

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Solution

The fourth proportional to 634,448.12, 875,562.96 and 347,980.28 is: 480,226.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,448.12 : 875,562.96 = 347,980.28 : x
  2. Step 2: Convert to fraction form
    634,448.12/875,562.96 = 347,980.28/x
  3. Step 3: Cross multiply
    634,448.12x = 875,562.96 × 347,980.28
  4. Step 4: Simplify right side
    634,448.12x = 304,678,643,978.43
  5. Step 5: Solve for x
    x = 304,678,643,978.43/634,448.12
  6. Step 6: Final answer
    x = 480,226.25

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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.