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Finding the Fourth Proportional to 520,594.40, 718,436.96 and 339,423.36

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Solution

The fourth proportional to 520,594.40, 718,436.96 and 339,423.36 is: 468,415.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,594.40 : 718,436.96 = 339,423.36 : x
  2. Step 2: Convert to fraction form
    520,594.40/718,436.96 = 339,423.36/x
  3. Step 3: Cross multiply
    520,594.40x = 718,436.96 × 339,423.36
  4. Step 4: Simplify right side
    520,594.40x = 243,854,286,911.39
  5. Step 5: Solve for x
    x = 243,854,286,911.39/520,594.40
  6. Step 6: Final answer
    x = 468,415.12

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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.