Home / 690,302.30-1,035,453.45-191,666.30

Finding the Fourth Proportional to 690,302.30, 1,035,453.45 and 191,666.30

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Solution

The fourth proportional to 690,302.30, 1,035,453.45 and 191,666.30 is: 287,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,302.30 : 1,035,453.45 = 191,666.30 : x
  2. Step 2: Convert to fraction form
    690,302.30/1,035,453.45 = 191,666.30/x
  3. Step 3: Cross multiply
    690,302.30x = 1,035,453.45 × 191,666.30
  4. Step 4: Simplify right side
    690,302.30x = 198,461,531,583.74
  5. Step 5: Solve for x
    x = 198,461,531,583.74/690,302.30
  6. Step 6: Final answer
    x = 287,499.45

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Double scale
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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.