Home / 543,312.40-815,746.20-307,116.40

Finding the Fourth Proportional to 543,312.40, 815,746.20 and 307,116.40

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Solution

The fourth proportional to 543,312.40, 815,746.20 and 307,116.40 is: 461,114.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,312.40 : 815,746.20 = 307,116.40 : x
  2. Step 2: Convert to fraction form
    543,312.40/815,746.20 = 307,116.40/x
  3. Step 3: Cross multiply
    543,312.40x = 815,746.20 × 307,116.40
  4. Step 4: Simplify right side
    543,312.40x = 250,529,036,257.68
  5. Step 5: Solve for x
    x = 250,529,036,257.68/543,312.40
  6. Step 6: Final answer
    x = 461,114.15

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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.