Home / 497,120.76-686,031.28-282,265.42

Finding the Fourth Proportional to 497,120.76, 686,031.28 and 282,265.42

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Solution

The fourth proportional to 497,120.76, 686,031.28 and 282,265.42 is: 389,528.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,120.76 : 686,031.28 = 282,265.42 : x
  2. Step 2: Convert to fraction form
    497,120.76/686,031.28 = 282,265.42/x
  3. Step 3: Cross multiply
    497,120.76x = 686,031.28 × 282,265.42
  4. Step 4: Simplify right side
    497,120.76x = 193,642,907,382.34
  5. Step 5: Solve for x
    x = 193,642,907,382.34/497,120.76
  6. Step 6: Final answer
    x = 389,528.91

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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.