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Finding the Fourth Proportional to 660,336.80, 989,849.10 and 304,730.60

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Solution

The fourth proportional to 660,336.80, 989,849.10 and 304,730.60 is: 456,793.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,336.80 : 989,849.10 = 304,730.60 : x
  2. Step 2: Convert to fraction form
    660,336.80/989,849.10 = 304,730.60/x
  3. Step 3: Cross multiply
    660,336.80x = 989,849.10 × 304,730.60
  4. Step 4: Simplify right side
    660,336.80x = 301,637,310,152.46
  5. Step 5: Solve for x
    x = 301,637,310,152.46/660,336.80
  6. Step 6: Final answer
    x = 456,793.12

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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.