Home / 542,829.40-815,021.70-306,633.40

Finding the Fourth Proportional to 542,829.40, 815,021.70 and 306,633.40

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Solution

The fourth proportional to 542,829.40, 815,021.70 and 306,633.40 is: 460,389.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,829.40 : 815,021.70 = 306,633.40 : x
  2. Step 2: Convert to fraction form
    542,829.40/815,021.70 = 306,633.40/x
  3. Step 3: Cross multiply
    542,829.40x = 815,021.70 × 306,633.40
  4. Step 4: Simplify right side
    542,829.40x = 249,912,874,944.78
  5. Step 5: Solve for x
    x = 249,912,874,944.78/542,829.40
  6. Step 6: Final answer
    x = 460,389.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.