Home / 685,983.78-1,029,607.23-349,265.10

Finding the Fourth Proportional to 685,983.78, 1,029,607.23 and 349,265.10

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Solution

The fourth proportional to 685,983.78, 1,029,607.23 and 349,265.10 is: 524,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,983.78 : 1,029,607.23 = 349,265.10 : x
  2. Step 2: Convert to fraction form
    685,983.78/1,029,607.23 = 349,265.10/x
  3. Step 3: Cross multiply
    685,983.78x = 1,029,607.23 × 349,265.10
  4. Step 4: Simplify right side
    685,983.78x = 359,605,872,146.67
  5. Step 5: Solve for x
    x = 359,605,872,146.67/685,983.78
  6. Step 6: Final answer
    x = 524,219.21

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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.