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Finding the Fourth Proportional to 636,510.42, 878,359.95 and 350,013.42

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Solution

The fourth proportional to 636,510.42, 878,359.95 and 350,013.42 is: 483,005.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,510.42 : 878,359.95 = 350,013.42 : x
  2. Step 2: Convert to fraction form
    636,510.42/878,359.95 = 350,013.42/x
  3. Step 3: Cross multiply
    636,510.42x = 878,359.95 × 350,013.42
  4. Step 4: Simplify right side
    636,510.42x = 307,437,770,090.53
  5. Step 5: Solve for x
    x = 307,437,770,090.53/636,510.42
  6. Step 6: Final answer
    x = 483,005.09

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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.