Home / 12,789,547.20-19,177,322.40-5,207,947.20

Finding the Fourth Proportional to 12,789,547.20, 19,177,322.40 and 5,207,947.20

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Solution

The fourth proportional to 12,789,547.20, 19,177,322.40 and 5,207,947.20 is: 7,809,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789,547.20 : 19,177,322.40 = 5,207,947.20 : x
  2. Step 2: Convert to fraction form
    12,789,547.20/19,177,322.40 = 5,207,947.20/x
  3. Step 3: Cross multiply
    12,789,547.20x = 19,177,322.40 × 5,207,947.20
  4. Step 4: Simplify right side
    12,789,547.20x = 99,874,482,496,577.28
  5. Step 5: Solve for x
    x = 99,874,482,496,577.28/12,789,547.20
  6. Step 6: Final answer
    x = 7,809,071.03

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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.