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Finding the Fourth Proportional to 434,326.40, 651,489.60 and 292,608.80

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Solution

The fourth proportional to 434,326.40, 651,489.60 and 292,608.80 is: 438,913.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,326.40 : 651,489.60 = 292,608.80 : x
  2. Step 2: Convert to fraction form
    434,326.40/651,489.60 = 292,608.80/x
  3. Step 3: Cross multiply
    434,326.40x = 651,489.60 × 292,608.80
  4. Step 4: Simplify right side
    434,326.40x = 190,631,590,068.48
  5. Step 5: Solve for x
    x = 190,631,590,068.48/434,326.40
  6. Step 6: Final answer
    x = 438,913.20

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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.