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Finding the Fourth Proportional to 520,050.40, 778,763.40 and 415,074.40

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Solution

The fourth proportional to 520,050.40, 778,763.40 and 415,074.40 is: 621,564.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,050.40 : 778,763.40 = 415,074.40 : x
  2. Step 2: Convert to fraction form
    520,050.40/778,763.40 = 415,074.40/x
  3. Step 3: Cross multiply
    520,050.40x = 778,763.40 × 415,074.40
  4. Step 4: Simplify right side
    520,050.40x = 323,244,750,996.96
  5. Step 5: Solve for x
    x = 323,244,750,996.96/520,050.40
  6. Step 6: Final answer
    x = 621,564.28

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1.5x scale

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.