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Finding the Fourth Proportional to 642,080.40, 961,277.40 and 623,648.40

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Solution

The fourth proportional to 642,080.40, 961,277.40 and 623,648.40 is: 933,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,080.40 : 961,277.40 = 623,648.40 : x
  2. Step 2: Convert to fraction form
    642,080.40/961,277.40 = 623,648.40/x
  3. Step 3: Cross multiply
    642,080.40x = 961,277.40 × 623,648.40
  4. Step 4: Simplify right side
    642,080.40x = 599,499,112,466.16
  5. Step 5: Solve for x
    x = 599,499,112,466.16/642,080.40
  6. Step 6: Final answer
    x = 933,682.31

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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.