Home / 486,869.10-671,764.21-282,798.76

Finding the Fourth Proportional to 486,869.10, 671,764.21 and 282,798.76

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Solution

The fourth proportional to 486,869.10, 671,764.21 and 282,798.76 is: 390,195.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,869.10 : 671,764.21 = 282,798.76 : x
  2. Step 2: Convert to fraction form
    486,869.10/671,764.21 = 282,798.76/x
  3. Step 3: Cross multiply
    486,869.10x = 671,764.21 × 282,798.76
  4. Step 4: Simplify right side
    486,869.10x = 189,974,085,600.38
  5. Step 5: Solve for x
    x = 189,974,085,600.38/486,869.10
  6. Step 6: Final answer
    x = 390,195.41

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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.