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Finding the Fourth Proportional to 659,658, 910,328.32 and 373,172

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Solution

The fourth proportional to 659,658, 910,328.32 and 373,172 is: 514,977.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,658 : 910,328.32 = 373,172 : x
  2. Step 2: Convert to fraction form
    659,658/910,328.32 = 373,172/x
  3. Step 3: Cross multiply
    659,658x = 910,328.32 × 373,172
  4. Step 4: Simplify right side
    659,658x = 339,709,039,831.04
  5. Step 5: Solve for x
    x = 339,709,039,831.04/659,658
  6. Step 6: Final answer
    x = 514,977.52

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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.