Home / 693,601.10-1,039,710.45-318,970.70

Finding the Fourth Proportional to 693,601.10, 1,039,710.45 and 318,970.70

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Solution

The fourth proportional to 693,601.10, 1,039,710.45 and 318,970.70 is: 478,138.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,601.10 : 1,039,710.45 = 318,970.70 : x
  2. Step 2: Convert to fraction form
    693,601.10/1,039,710.45 = 318,970.70/x
  3. Step 3: Cross multiply
    693,601.10x = 1,039,710.45 × 318,970.70
  4. Step 4: Simplify right side
    693,601.10x = 331,637,170,033.82
  5. Step 5: Solve for x
    x = 331,637,170,033.82/693,601.10
  6. Step 6: Final answer
    x = 478,138.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.