Home / 390,629.94-586,001.04-120,779.13

Finding the Fourth Proportional to 390,629.94, 586,001.04 and 120,779.13

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Solution

The fourth proportional to 390,629.94, 586,001.04 and 120,779.13 is: 181,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,629.94 : 586,001.04 = 120,779.13 : x
  2. Step 2: Convert to fraction form
    390,629.94/586,001.04 = 120,779.13/x
  3. Step 3: Cross multiply
    390,629.94x = 586,001.04 × 120,779.13
  4. Step 4: Simplify right side
    390,629.94x = 70,776,693,057.57
  5. Step 5: Solve for x
    x = 70,776,693,057.57/390,629.94
  6. Step 6: Final answer
    x = 181,186.04

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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.