Home / 4,020,128.70-5,643,110.10-4,020,128.70

Finding the Fourth Proportional to 4,020,128.70, 5,643,110.10 and 4,020,128.70

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Solution

The fourth proportional to 4,020,128.70, 5,643,110.10 and 4,020,128.70 is: 5,643,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020,128.70 : 5,643,110.10 = 4,020,128.70 : x
  2. Step 2: Convert to fraction form
    4,020,128.70/5,643,110.10 = 4,020,128.70/x
  3. Step 3: Cross multiply
    4,020,128.70x = 5,643,110.10 × 4,020,128.70
  4. Step 4: Simplify right side
    4,020,128.70x = 22,686,028,870,269.87
  5. Step 5: Solve for x
    x = 22,686,028,870,269.87/4,020,128.70
  6. Step 6: Final answer
    x = 5,643,110.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.