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Finding the Fourth Proportional to 528,430.26, 729,210.69 and 302,090.34

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Solution

The fourth proportional to 528,430.26, 729,210.69 and 302,090.34 is: 416,871.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,430.26 : 729,210.69 = 302,090.34 : x
  2. Step 2: Convert to fraction form
    528,430.26/729,210.69 = 302,090.34/x
  3. Step 3: Cross multiply
    528,430.26x = 729,210.69 × 302,090.34
  4. Step 4: Simplify right side
    528,430.26x = 220,287,505,273.74
  5. Step 5: Solve for x
    x = 220,287,505,273.74/528,430.26
  6. Step 6: Final answer
    x = 416,871.48

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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.