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Finding the Fourth Proportional to 520,803.90, 718,311.96 and 448,325.82

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Solution

The fourth proportional to 520,803.90, 718,311.96 and 448,325.82 is: 618,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,803.90 : 718,311.96 = 448,325.82 : x
  2. Step 2: Convert to fraction form
    520,803.90/718,311.96 = 448,325.82/x
  3. Step 3: Cross multiply
    520,803.90x = 718,311.96 × 448,325.82
  4. Step 4: Simplify right side
    520,803.90x = 322,037,798,482.81
  5. Step 5: Solve for x
    x = 322,037,798,482.81/520,803.90
  6. Step 6: Final answer
    x = 618,347.52

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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.