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Finding the Fourth Proportional to 660,385.80, 990,578.70 and 565,907.40

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Solution

The fourth proportional to 660,385.80, 990,578.70 and 565,907.40 is: 848,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,385.80 : 990,578.70 = 565,907.40 : x
  2. Step 2: Convert to fraction form
    660,385.80/990,578.70 = 565,907.40/x
  3. Step 3: Cross multiply
    660,385.80x = 990,578.70 × 565,907.40
  4. Step 4: Simplify right side
    660,385.80x = 560,575,816,612.38
  5. Step 5: Solve for x
    x = 560,575,816,612.38/660,385.80
  6. Step 6: Final answer
    x = 848,861.10

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Similar ratio
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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.