Home / 976,821.40-1,465,232.10-345,653.20

Finding the Fourth Proportional to 976,821.40, 1,465,232.10 and 345,653.20

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Solution

The fourth proportional to 976,821.40, 1,465,232.10 and 345,653.20 is: 518,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,821.40 : 1,465,232.10 = 345,653.20 : x
  2. Step 2: Convert to fraction form
    976,821.40/1,465,232.10 = 345,653.20/x
  3. Step 3: Cross multiply
    976,821.40x = 1,465,232.10 × 345,653.20
  4. Step 4: Simplify right side
    976,821.40x = 506,462,164,107.72
  5. Step 5: Solve for x
    x = 506,462,164,107.72/976,821.40
  6. Step 6: Final answer
    x = 518,479.80

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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.