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Finding the Fourth Proportional to 634,768.65, 875,981.79 and 348,290.89

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Solution

The fourth proportional to 634,768.65, 875,981.79 and 348,290.89 is: 480,642.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,768.65 : 875,981.79 = 348,290.89 : x
  2. Step 2: Convert to fraction form
    634,768.65/875,981.79 = 348,290.89/x
  3. Step 3: Cross multiply
    634,768.65x = 875,981.79 × 348,290.89
  4. Step 4: Simplify right side
    634,768.65x = 305,096,475,072.94
  5. Step 5: Solve for x
    x = 305,096,475,072.94/634,768.65
  6. Step 6: Final answer
    x = 480,642.00

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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.