Home / 910,871.40-1,366,307.10-279,784.20

Finding the Fourth Proportional to 910,871.40, 1,366,307.10 and 279,784.20

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Solution

The fourth proportional to 910,871.40, 1,366,307.10 and 279,784.20 is: 419,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,871.40 : 1,366,307.10 = 279,784.20 : x
  2. Step 2: Convert to fraction form
    910,871.40/1,366,307.10 = 279,784.20/x
  3. Step 3: Cross multiply
    910,871.40x = 1,366,307.10 × 279,784.20
  4. Step 4: Simplify right side
    910,871.40x = 382,271,138,927.82
  5. Step 5: Solve for x
    x = 382,271,138,927.82/910,871.40
  6. Step 6: Final answer
    x = 419,676.30

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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.