Home / 486,862.55-671,755.17-282,792.21

Finding the Fourth Proportional to 486,862.55, 671,755.17 and 282,792.21

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Solution

The fourth proportional to 486,862.55, 671,755.17 and 282,792.21 is: 390,186.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,862.55 : 671,755.17 = 282,792.21 : x
  2. Step 2: Convert to fraction form
    486,862.55/671,755.17 = 282,792.21/x
  3. Step 3: Cross multiply
    486,862.55x = 671,755.17 × 282,792.21
  4. Step 4: Simplify right side
    486,862.55x = 189,967,131,423.24
  5. Step 5: Solve for x
    x = 189,967,131,423.24/486,862.55
  6. Step 6: Final answer
    x = 390,186.37

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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.