Home / 1,053,111.80-1,579,206.90-421,815.80

Finding the Fourth Proportional to 1,053,111.80, 1,579,206.90 and 421,815.80

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Solution

The fourth proportional to 1,053,111.80, 1,579,206.90 and 421,815.80 is: 632,539.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053,111.80 : 1,579,206.90 = 421,815.80 : x
  2. Step 2: Convert to fraction form
    1,053,111.80/1,579,206.90 = 421,815.80/x
  3. Step 3: Cross multiply
    1,053,111.80x = 1,579,206.90 × 421,815.80
  4. Step 4: Simplify right side
    1,053,111.80x = 666,134,421,889.02
  5. Step 5: Solve for x
    x = 666,134,421,889.02/1,053,111.80
  6. Step 6: Final answer
    x = 632,539.13

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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.