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Finding the Fourth Proportional to 634,509.78, 875,624.76 and 348,032.22

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Solution

The fourth proportional to 634,509.78, 875,624.76 and 348,032.22 is: 480,285.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,509.78 : 875,624.76 = 348,032.22 : x
  2. Step 2: Convert to fraction form
    634,509.78/875,624.76 = 348,032.22/x
  3. Step 3: Cross multiply
    634,509.78x = 875,624.76 × 348,032.22
  4. Step 4: Simplify right side
    634,509.78x = 304,745,629,109.77
  5. Step 5: Solve for x
    x = 304,745,629,109.77/634,509.78
  6. Step 6: Final answer
    x = 480,285.16

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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.