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Finding the Fourth Proportional to 520,078.70, 730,209.70 and 520,078.70

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Solution

The fourth proportional to 520,078.70, 730,209.70 and 520,078.70 is: 730,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,078.70 : 730,209.70 = 520,078.70 : x
  2. Step 2: Convert to fraction form
    520,078.70/730,209.70 = 520,078.70/x
  3. Step 3: Cross multiply
    520,078.70x = 730,209.70 × 520,078.70
  4. Step 4: Simplify right side
    520,078.70x = 379,766,511,503.39
  5. Step 5: Solve for x
    x = 379,766,511,503.39/520,078.70
  6. Step 6: Final answer
    x = 730,209.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.