Home / 1,240,458.05-1,860,456.40-387,550.60

Finding the Fourth Proportional to 1,240,458.05, 1,860,456.40 and 387,550.60

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Solution

The fourth proportional to 1,240,458.05, 1,860,456.40 and 387,550.60 is: 581,253.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,458.05 : 1,860,456.40 = 387,550.60 : x
  2. Step 2: Convert to fraction form
    1,240,458.05/1,860,456.40 = 387,550.60/x
  3. Step 3: Cross multiply
    1,240,458.05x = 1,860,456.40 × 387,550.60
  4. Step 4: Simplify right side
    1,240,458.05x = 721,020,982,853.81
  5. Step 5: Solve for x
    x = 721,020,982,853.81/1,240,458.05
  6. Step 6: Final answer
    x = 581,253.82

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1.5x scale

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.