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Finding the Fourth Proportional to 660,461.80, 990,036.60 and 304,855.60

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Solution

The fourth proportional to 660,461.80, 990,036.60 and 304,855.60 is: 456,980.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,461.80 : 990,036.60 = 304,855.60 : x
  2. Step 2: Convert to fraction form
    660,461.80/990,036.60 = 304,855.60/x
  3. Step 3: Cross multiply
    660,461.80x = 990,036.60 × 304,855.60
  4. Step 4: Simplify right side
    660,461.80x = 301,818,201,714.96
  5. Step 5: Solve for x
    x = 301,818,201,714.96/660,461.80
  6. Step 6: Final answer
    x = 456,980.56

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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.