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Finding the Fourth Proportional to 620,642.40, 930,963.60 and 246,665.40

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Solution

The fourth proportional to 620,642.40, 930,963.60 and 246,665.40 is: 369,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,642.40 : 930,963.60 = 246,665.40 : x
  2. Step 2: Convert to fraction form
    620,642.40/930,963.60 = 246,665.40/x
  3. Step 3: Cross multiply
    620,642.40x = 930,963.60 × 246,665.40
  4. Step 4: Simplify right side
    620,642.40x = 229,636,508,779.44
  5. Step 5: Solve for x
    x = 229,636,508,779.44/620,642.40
  6. Step 6: Final answer
    x = 369,998.10

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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.