Home / 679,143.40-936,827.56-424,051.72

Finding the Fourth Proportional to 679,143.40, 936,827.56 and 424,051.72

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Solution

The fourth proportional to 679,143.40, 936,827.56 and 424,051.72 is: 584,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,143.40 : 936,827.56 = 424,051.72 : x
  2. Step 2: Convert to fraction form
    679,143.40/936,827.56 = 424,051.72/x
  3. Step 3: Cross multiply
    679,143.40x = 936,827.56 × 424,051.72
  4. Step 4: Simplify right side
    679,143.40x = 397,263,338,161.40
  5. Step 5: Solve for x
    x = 397,263,338,161.40/679,143.40
  6. Step 6: Final answer
    x = 584,947.65

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Half scale
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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.