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Finding the Fourth Proportional to 442,920.70, 618,689.30 and 442,920.70

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Solution

The fourth proportional to 442,920.70, 618,689.30 and 442,920.70 is: 618,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,920.70 : 618,689.30 = 442,920.70 : x
  2. Step 2: Convert to fraction form
    442,920.70/618,689.30 = 442,920.70/x
  3. Step 3: Cross multiply
    442,920.70x = 618,689.30 × 442,920.70
  4. Step 4: Simplify right side
    442,920.70x = 274,030,297,838.51
  5. Step 5: Solve for x
    x = 274,030,297,838.51/442,920.70
  6. Step 6: Final answer
    x = 618,689.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.