Home / 406,528.16-609,856.88-125,987.36

Finding the Fourth Proportional to 406,528.16, 609,856.88 and 125,987.36

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Solution

The fourth proportional to 406,528.16, 609,856.88 and 125,987.36 is: 189,001.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,528.16 : 609,856.88 = 125,987.36 : x
  2. Step 2: Convert to fraction form
    406,528.16/609,856.88 = 125,987.36/x
  3. Step 3: Cross multiply
    406,528.16x = 609,856.88 × 125,987.36
  4. Step 4: Simplify right side
    406,528.16x = 76,834,258,289.04
  5. Step 5: Solve for x
    x = 76,834,258,289.04/406,528.16
  6. Step 6: Final answer
    x = 189,001.07

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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.