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Finding the Fourth Proportional to 886,533.86, 1,329,987.60 and 287,448.30

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Solution

The fourth proportional to 886,533.86, 1,329,987.60 and 287,448.30 is: 431,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,533.86 : 1,329,987.60 = 287,448.30 : x
  2. Step 2: Convert to fraction form
    886,533.86/1,329,987.60 = 287,448.30/x
  3. Step 3: Cross multiply
    886,533.86x = 1,329,987.60 × 287,448.30
  4. Step 4: Simplify right side
    886,533.86x = 382,302,674,641.08
  5. Step 5: Solve for x
    x = 382,302,674,641.08/886,533.86
  6. Step 6: Final answer
    x = 431,233.02

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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.