Home / 1,289,602.80-1,934,420.40-391,053.60

Finding the Fourth Proportional to 1,289,602.80, 1,934,420.40 and 391,053.60

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Solution

The fourth proportional to 1,289,602.80, 1,934,420.40 and 391,053.60 is: 586,585.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,602.80 : 1,934,420.40 = 391,053.60 : x
  2. Step 2: Convert to fraction form
    1,289,602.80/1,934,420.40 = 391,053.60/x
  3. Step 3: Cross multiply
    1,289,602.80x = 1,934,420.40 × 391,053.60
  4. Step 4: Simplify right side
    1,289,602.80x = 756,462,061,333.44
  5. Step 5: Solve for x
    x = 756,462,061,333.44/1,289,602.80
  6. Step 6: Final answer
    x = 586,585.31

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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.