Home / 723,219.36-1,085,009.70-510,402.78

Finding the Fourth Proportional to 723,219.36, 1,085,009.70 and 510,402.78

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Solution

The fourth proportional to 723,219.36, 1,085,009.70 and 510,402.78 is: 765,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,219.36 : 1,085,009.70 = 510,402.78 : x
  2. Step 2: Convert to fraction form
    723,219.36/1,085,009.70 = 510,402.78/x
  3. Step 3: Cross multiply
    723,219.36x = 1,085,009.70 × 510,402.78
  4. Step 4: Simplify right side
    723,219.36x = 553,791,967,206.97
  5. Step 5: Solve for x
    x = 553,791,967,206.97/723,219.36
  6. Step 6: Final answer
    x = 765,731.67

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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.