Home / 1,129,805.12-1,559,207.40-620,512.76

Finding the Fourth Proportional to 1,129,805.12, 1,559,207.40 and 620,512.76

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Solution

The fourth proportional to 1,129,805.12, 1,559,207.40 and 620,512.76 is: 856,349.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,805.12 : 1,559,207.40 = 620,512.76 : x
  2. Step 2: Convert to fraction form
    1,129,805.12/1,559,207.40 = 620,512.76/x
  3. Step 3: Cross multiply
    1,129,805.12x = 1,559,207.40 × 620,512.76
  4. Step 4: Simplify right side
    1,129,805.12x = 967,508,087,186.42
  5. Step 5: Solve for x
    x = 967,508,087,186.42/1,129,805.12
  6. Step 6: Final answer
    x = 856,349.53

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.