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Finding the Fourth Proportional to 612,929.76, 919,950.84 and 313,617.12

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Solution

The fourth proportional to 612,929.76, 919,950.84 and 313,617.12 is: 470,710.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,929.76 : 919,950.84 = 313,617.12 : x
  2. Step 2: Convert to fraction form
    612,929.76/919,950.84 = 313,617.12/x
  3. Step 3: Cross multiply
    612,929.76x = 919,950.84 × 313,617.12
  4. Step 4: Simplify right side
    612,929.76x = 288,512,332,982.38
  5. Step 5: Solve for x
    x = 288,512,332,982.38/612,929.76
  6. Step 6: Final answer
    x = 470,710.27

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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.