Home / 696,053.90-1,044,080.85-428,948.30

Finding the Fourth Proportional to 696,053.90, 1,044,080.85 and 428,948.30

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Solution

The fourth proportional to 696,053.90, 1,044,080.85 and 428,948.30 is: 643,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,053.90 : 1,044,080.85 = 428,948.30 : x
  2. Step 2: Convert to fraction form
    696,053.90/1,044,080.85 = 428,948.30/x
  3. Step 3: Cross multiply
    696,053.90x = 1,044,080.85 × 428,948.30
  4. Step 4: Simplify right side
    696,053.90x = 447,856,705,670.06
  5. Step 5: Solve for x
    x = 447,856,705,670.06/696,053.90
  6. Step 6: Final answer
    x = 643,422.45

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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.