Home / 1,038,621.80-1,557,779.10-290,743.40

Finding the Fourth Proportional to 1,038,621.80, 1,557,779.10 and 290,743.40

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Solution

The fourth proportional to 1,038,621.80, 1,557,779.10 and 290,743.40 is: 436,072.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,621.80 : 1,557,779.10 = 290,743.40 : x
  2. Step 2: Convert to fraction form
    1,038,621.80/1,557,779.10 = 290,743.40/x
  3. Step 3: Cross multiply
    1,038,621.80x = 1,557,779.10 × 290,743.40
  4. Step 4: Simplify right side
    1,038,621.80x = 452,913,991,982.94
  5. Step 5: Solve for x
    x = 452,913,991,982.94/1,038,621.80
  6. Step 6: Final answer
    x = 436,072.10

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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.