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Finding the Fourth Proportional to 520,334.64, 718,075.80 and 293,975.28

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Solution

The fourth proportional to 520,334.64, 718,075.80 and 293,975.28 is: 405,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,334.64 : 718,075.80 = 293,975.28 : x
  2. Step 2: Convert to fraction form
    520,334.64/718,075.80 = 293,975.28/x
  3. Step 3: Cross multiply
    520,334.64x = 718,075.80 × 293,975.28
  4. Step 4: Simplify right side
    520,334.64x = 211,096,534,366.22
  5. Step 5: Solve for x
    x = 211,096,534,366.22/520,334.64
  6. Step 6: Final answer
    x = 405,693.79

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1.5x scale

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.