Home / 920,154.18-1,269,870.78-557,609.76

Finding the Fourth Proportional to 920,154.18, 1,269,870.78 and 557,609.76

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Solution

The fourth proportional to 920,154.18, 1,269,870.78 and 557,609.76 is: 769,536.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,154.18 : 1,269,870.78 = 557,609.76 : x
  2. Step 2: Convert to fraction form
    920,154.18/1,269,870.78 = 557,609.76/x
  3. Step 3: Cross multiply
    920,154.18x = 1,269,870.78 × 557,609.76
  4. Step 4: Simplify right side
    920,154.18x = 708,092,340,866.81
  5. Step 5: Solve for x
    x = 708,092,340,866.81/920,154.18
  6. Step 6: Final answer
    x = 769,536.62

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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.