Home / 723,987.20-1,085,980.80-456,881.60

Finding the Fourth Proportional to 723,987.20, 1,085,980.80 and 456,881.60

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Solution

The fourth proportional to 723,987.20, 1,085,980.80 and 456,881.60 is: 685,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,987.20 : 1,085,980.80 = 456,881.60 : x
  2. Step 2: Convert to fraction form
    723,987.20/1,085,980.80 = 456,881.60/x
  3. Step 3: Cross multiply
    723,987.20x = 1,085,980.80 × 456,881.60
  4. Step 4: Simplify right side
    723,987.20x = 496,164,645,473.28
  5. Step 5: Solve for x
    x = 496,164,645,473.28/723,987.20
  6. Step 6: Final answer
    x = 685,322.40

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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.