Home / 818,265.12-1,129,196.76-455,681.04

Finding the Fourth Proportional to 818,265.12, 1,129,196.76 and 455,681.04

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Solution

The fourth proportional to 818,265.12, 1,129,196.76 and 455,681.04 is: 628,834.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,265.12 : 1,129,196.76 = 455,681.04 : x
  2. Step 2: Convert to fraction form
    818,265.12/1,129,196.76 = 455,681.04/x
  3. Step 3: Cross multiply
    818,265.12x = 1,129,196.76 × 455,681.04
  4. Step 4: Simplify right side
    818,265.12x = 514,553,553,961.43
  5. Step 5: Solve for x
    x = 514,553,553,961.43/818,265.12
  6. Step 6: Final answer
    x = 628,834.76

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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.