Home / 696,047.40-1,044,071.10-428,941.80

Finding the Fourth Proportional to 696,047.40, 1,044,071.10 and 428,941.80

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Solution

The fourth proportional to 696,047.40, 1,044,071.10 and 428,941.80 is: 643,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,047.40 : 1,044,071.10 = 428,941.80 : x
  2. Step 2: Convert to fraction form
    696,047.40/1,044,071.10 = 428,941.80/x
  3. Step 3: Cross multiply
    696,047.40x = 1,044,071.10 × 428,941.80
  4. Step 4: Simplify right side
    696,047.40x = 447,845,736,961.98
  5. Step 5: Solve for x
    x = 447,845,736,961.98/696,047.40
  6. Step 6: Final answer
    x = 643,412.70

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Double scale
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Similar ratio
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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.