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Finding the Fourth Proportional to 662,115.20, 993,583.20 and 346,798.40

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Solution

The fourth proportional to 662,115.20, 993,583.20 and 346,798.40 is: 520,412.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,115.20 : 993,583.20 = 346,798.40 : x
  2. Step 2: Convert to fraction form
    662,115.20/993,583.20 = 346,798.40/x
  3. Step 3: Cross multiply
    662,115.20x = 993,583.20 × 346,798.40
  4. Step 4: Simplify right side
    662,115.20x = 344,573,064,026.88
  5. Step 5: Solve for x
    x = 344,573,064,026.88/662,115.20
  6. Step 6: Final answer
    x = 520,412.56

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Double scale
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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.