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Finding the Fourth Proportional to 634,406.90, 875,339.72 and 362,387.84

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Solution

The fourth proportional to 634,406.90, 875,339.72 and 362,387.84 is: 500,014.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,406.90 : 875,339.72 = 362,387.84 : x
  2. Step 2: Convert to fraction form
    634,406.90/875,339.72 = 362,387.84/x
  3. Step 3: Cross multiply
    634,406.90x = 875,339.72 × 362,387.84
  4. Step 4: Simplify right side
    634,406.90x = 317,212,470,397.01
  5. Step 5: Solve for x
    x = 317,212,470,397.01/634,406.90
  6. Step 6: Final answer
    x = 500,014.22

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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.