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Finding the Fourth Proportional to 659,971.64, 910,774.50 and 373,491.68

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Solution

The fourth proportional to 659,971.64, 910,774.50 and 373,491.68 is: 515,426.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,971.64 : 910,774.50 = 373,491.68 : x
  2. Step 2: Convert to fraction form
    659,971.64/910,774.50 = 373,491.68/x
  3. Step 3: Cross multiply
    659,971.64x = 910,774.50 × 373,491.68
  4. Step 4: Simplify right side
    659,971.64x = 340,166,698,106.16
  5. Step 5: Solve for x
    x = 340,166,698,106.16/659,971.64
  6. Step 6: Final answer
    x = 515,426.24

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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.