Home / 831,021.72-1,146,809.95-449,048.49

Finding the Fourth Proportional to 831,021.72, 1,146,809.95 and 449,048.49

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Solution

The fourth proportional to 831,021.72, 1,146,809.95 and 449,048.49 is: 619,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,021.72 : 1,146,809.95 = 449,048.49 : x
  2. Step 2: Convert to fraction form
    831,021.72/1,146,809.95 = 449,048.49/x
  3. Step 3: Cross multiply
    831,021.72x = 1,146,809.95 × 449,048.49
  4. Step 4: Simplify right side
    831,021.72x = 514,973,276,364.48
  5. Step 5: Solve for x
    x = 514,973,276,364.48/831,021.72
  6. Step 6: Final answer
    x = 619,686.90

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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.