Home / 519,261.60-778,834.80-145,322.40

Finding the Fourth Proportional to 519,261.60, 778,834.80 and 145,322.40

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Solution

The fourth proportional to 519,261.60, 778,834.80 and 145,322.40 is: 217,967.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,261.60 : 778,834.80 = 145,322.40 : x
  2. Step 2: Convert to fraction form
    519,261.60/778,834.80 = 145,322.40/x
  3. Step 3: Cross multiply
    519,261.60x = 778,834.80 × 145,322.40
  4. Step 4: Simplify right side
    519,261.60x = 113,182,142,339.52
  5. Step 5: Solve for x
    x = 113,182,142,339.52/519,261.60
  6. Step 6: Final answer
    x = 217,967.48

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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.