Home / 788,889.60-1,183,507.20-389,721.60

Finding the Fourth Proportional to 788,889.60, 1,183,507.20 and 389,721.60

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Solution

The fourth proportional to 788,889.60, 1,183,507.20 and 389,721.60 is: 584,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,889.60 : 1,183,507.20 = 389,721.60 : x
  2. Step 2: Convert to fraction form
    788,889.60/1,183,507.20 = 389,721.60/x
  3. Step 3: Cross multiply
    788,889.60x = 1,183,507.20 × 389,721.60
  4. Step 4: Simplify right side
    788,889.60x = 461,238,319,595.52
  5. Step 5: Solve for x
    x = 461,238,319,595.52/788,889.60
  6. Step 6: Final answer
    x = 584,667.77

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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.