Home / 753,702.30-1,130,164.65-280,143.90

Finding the Fourth Proportional to 753,702.30, 1,130,164.65 and 280,143.90

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Solution

The fourth proportional to 753,702.30, 1,130,164.65 and 280,143.90 is: 420,071.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,702.30 : 1,130,164.65 = 280,143.90 : x
  2. Step 2: Convert to fraction form
    753,702.30/1,130,164.65 = 280,143.90/x
  3. Step 3: Cross multiply
    753,702.30x = 1,130,164.65 × 280,143.90
  4. Step 4: Simplify right side
    753,702.30x = 316,608,732,693.14
  5. Step 5: Solve for x
    x = 316,608,732,693.14/753,702.30
  6. Step 6: Final answer
    x = 420,071.34

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Double scale
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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.