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Finding the Fourth Proportional to 521,063.84, 719,080.86 and 291,619.32

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Solution

The fourth proportional to 521,063.84, 719,080.86 and 291,619.32 is: 402,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,063.84 : 719,080.86 = 291,619.32 : x
  2. Step 2: Convert to fraction form
    521,063.84/719,080.86 = 291,619.32/x
  3. Step 3: Cross multiply
    521,063.84x = 719,080.86 × 291,619.32
  4. Step 4: Simplify right side
    521,063.84x = 209,697,871,418.22
  5. Step 5: Solve for x
    x = 209,697,871,418.22/521,063.84
  6. Step 6: Final answer
    x = 402,441.80

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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.