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Finding the Fourth Proportional to 706,131.76, 974,237.88 and 438,015.28

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Solution

The fourth proportional to 706,131.76, 974,237.88 and 438,015.28 is: 604,322.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,131.76 : 974,237.88 = 438,015.28 : x
  2. Step 2: Convert to fraction form
    706,131.76/974,237.88 = 438,015.28/x
  3. Step 3: Cross multiply
    706,131.76x = 974,237.88 × 438,015.28
  4. Step 4: Simplify right side
    706,131.76x = 426,731,077,794.81
  5. Step 5: Solve for x
    x = 426,731,077,794.81/706,131.76
  6. Step 6: Final answer
    x = 604,322.17

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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.