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Finding the Fourth Proportional to 522,009.70, 783,014.55 and 403,765.90

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Solution

The fourth proportional to 522,009.70, 783,014.55 and 403,765.90 is: 605,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,009.70 : 783,014.55 = 403,765.90 : x
  2. Step 2: Convert to fraction form
    522,009.70/783,014.55 = 403,765.90/x
  3. Step 3: Cross multiply
    522,009.70x = 783,014.55 × 403,765.90
  4. Step 4: Simplify right side
    522,009.70x = 316,154,574,493.85
  5. Step 5: Solve for x
    x = 316,154,574,493.85/522,009.70
  6. Step 6: Final answer
    x = 605,648.85

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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.