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Finding the Fourth Proportional to 402,500.60, 556,017.78 and 381,242.96

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Solution

The fourth proportional to 402,500.60, 556,017.78 and 381,242.96 is: 526,652.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,500.60 : 556,017.78 = 381,242.96 : x
  2. Step 2: Convert to fraction form
    402,500.60/556,017.78 = 381,242.96/x
  3. Step 3: Cross multiply
    402,500.60x = 556,017.78 × 381,242.96
  4. Step 4: Simplify right side
    402,500.60x = 211,977,864,259.83
  5. Step 5: Solve for x
    x = 211,977,864,259.83/402,500.60
  6. Step 6: Final answer
    x = 526,652.29

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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.