Home / 1,455,761.70-2,183,642.55-390,911.40

Finding the Fourth Proportional to 1,455,761.70, 2,183,642.55 and 390,911.40

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Solution

The fourth proportional to 1,455,761.70, 2,183,642.55 and 390,911.40 is: 586,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455,761.70 : 2,183,642.55 = 390,911.40 : x
  2. Step 2: Convert to fraction form
    1,455,761.70/2,183,642.55 = 390,911.40/x
  3. Step 3: Cross multiply
    1,455,761.70x = 2,183,642.55 × 390,911.40
  4. Step 4: Simplify right side
    1,455,761.70x = 853,610,766,320.07
  5. Step 5: Solve for x
    x = 853,610,766,320.07/1,455,761.70
  6. Step 6: Final answer
    x = 586,367.10

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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.