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Finding the Fourth Proportional to 555,440.80, 833,420.40 and 289,501.60

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Solution

The fourth proportional to 555,440.80, 833,420.40 and 289,501.60 is: 434,387.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,440.80 : 833,420.40 = 289,501.60 : x
  2. Step 2: Convert to fraction form
    555,440.80/833,420.40 = 289,501.60/x
  3. Step 3: Cross multiply
    555,440.80x = 833,420.40 × 289,501.60
  4. Step 4: Simplify right side
    555,440.80x = 241,276,539,272.64
  5. Step 5: Solve for x
    x = 241,276,539,272.64/555,440.80
  6. Step 6: Final answer
    x = 434,387.50

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Similar ratio
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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.