Home / 742,911.40-1,114,367.10-636,623.20

Finding the Fourth Proportional to 742,911.40, 1,114,367.10 and 636,623.20

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Solution

The fourth proportional to 742,911.40, 1,114,367.10 and 636,623.20 is: 954,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,911.40 : 1,114,367.10 = 636,623.20 : x
  2. Step 2: Convert to fraction form
    742,911.40/1,114,367.10 = 636,623.20/x
  3. Step 3: Cross multiply
    742,911.40x = 1,114,367.10 × 636,623.20
  4. Step 4: Simplify right side
    742,911.40x = 709,431,949,176.72
  5. Step 5: Solve for x
    x = 709,431,949,176.72/742,911.40
  6. Step 6: Final answer
    x = 954,934.80

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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.