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Finding the Fourth Proportional to 520,071, 779,697.65 and 349,465.88

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Solution

The fourth proportional to 520,071, 779,697.65 and 349,465.88 is: 523,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,071 : 779,697.65 = 349,465.88 : x
  2. Step 2: Convert to fraction form
    520,071/779,697.65 = 349,465.88/x
  3. Step 3: Cross multiply
    520,071x = 779,697.65 × 349,465.88
  4. Step 4: Simplify right side
    520,071x = 272,477,719,745.36
  5. Step 5: Solve for x
    x = 272,477,719,745.36/520,071
  6. Step 6: Final answer
    x = 523,924.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.