Home / 641,941.76-886,802.40-512,710.56

Finding the Fourth Proportional to 641,941.76, 886,802.40 and 512,710.56

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Solution

The fourth proportional to 641,941.76, 886,802.40 and 512,710.56 is: 708,277.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,941.76 : 886,802.40 = 512,710.56 : x
  2. Step 2: Convert to fraction form
    641,941.76/886,802.40 = 512,710.56/x
  3. Step 3: Cross multiply
    641,941.76x = 886,802.40 × 512,710.56
  4. Step 4: Simplify right side
    641,941.76x = 454,672,955,113.34
  5. Step 5: Solve for x
    x = 454,672,955,113.34/641,941.76
  6. Step 6: Final answer
    x = 708,277.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.