Home / 638,868.10-881,638.72-366,988.65

Finding the Fourth Proportional to 638,868.10, 881,638.72 and 366,988.65

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Solution

The fourth proportional to 638,868.10, 881,638.72 and 366,988.65 is: 506,444.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,868.10 : 881,638.72 = 366,988.65 : x
  2. Step 2: Convert to fraction form
    638,868.10/881,638.72 = 366,988.65/x
  3. Step 3: Cross multiply
    638,868.10x = 881,638.72 × 366,988.65
  4. Step 4: Simplify right side
    638,868.10x = 323,551,403,640.53
  5. Step 5: Solve for x
    x = 323,551,403,640.53/638,868.10
  6. Step 6: Final answer
    x = 506,444.76

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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.