Home / 688,526.80-1,032,790.20-215,211.40

Finding the Fourth Proportional to 688,526.80, 1,032,790.20 and 215,211.40

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Solution

The fourth proportional to 688,526.80, 1,032,790.20 and 215,211.40 is: 322,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,526.80 : 1,032,790.20 = 215,211.40 : x
  2. Step 2: Convert to fraction form
    688,526.80/1,032,790.20 = 215,211.40/x
  3. Step 3: Cross multiply
    688,526.80x = 1,032,790.20 × 215,211.40
  4. Step 4: Simplify right side
    688,526.80x = 222,268,224,848.28
  5. Step 5: Solve for x
    x = 222,268,224,848.28/688,526.80
  6. Step 6: Final answer
    x = 322,817.10

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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.