Home / 1,758,819.40-2,638,229.10-429,123.40

Finding the Fourth Proportional to 1,758,819.40, 2,638,229.10 and 429,123.40

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Solution

The fourth proportional to 1,758,819.40, 2,638,229.10 and 429,123.40 is: 643,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758,819.40 : 2,638,229.10 = 429,123.40 : x
  2. Step 2: Convert to fraction form
    1,758,819.40/2,638,229.10 = 429,123.40/x
  3. Step 3: Cross multiply
    1,758,819.40x = 2,638,229.10 × 429,123.40
  4. Step 4: Simplify right side
    1,758,819.40x = 1,132,125,841,370.94
  5. Step 5: Solve for x
    x = 1,132,125,841,370.94/1,758,819.40
  6. Step 6: Final answer
    x = 643,685.10

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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.