Home / 556,511.40-767,985.66-314,788.76

Finding the Fourth Proportional to 556,511.40, 767,985.66 and 314,788.76

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Solution

The fourth proportional to 556,511.40, 767,985.66 and 314,788.76 is: 434,408.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,511.40 : 767,985.66 = 314,788.76 : x
  2. Step 2: Convert to fraction form
    556,511.40/767,985.66 = 314,788.76/x
  3. Step 3: Cross multiply
    556,511.40x = 767,985.66 × 314,788.76
  4. Step 4: Simplify right side
    556,511.40x = 241,753,253,609.18
  5. Step 5: Solve for x
    x = 241,753,253,609.18/556,511.40
  6. Step 6: Final answer
    x = 434,408.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.