Home / 530,180.75-731,643.76-315,316.10

Finding the Fourth Proportional to 530,180.75, 731,643.76 and 315,316.10

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Solution

The fourth proportional to 530,180.75, 731,643.76 and 315,316.10 is: 435,132.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,180.75 : 731,643.76 = 315,316.10 : x
  2. Step 2: Convert to fraction form
    530,180.75/731,643.76 = 315,316.10/x
  3. Step 3: Cross multiply
    530,180.75x = 731,643.76 × 315,316.10
  4. Step 4: Simplify right side
    530,180.75x = 230,699,056,992.54
  5. Step 5: Solve for x
    x = 230,699,056,992.54/530,180.75
  6. Step 6: Final answer
    x = 435,132.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.