Home / 763,409.70-1,145,114.55-705,672.90

Finding the Fourth Proportional to 763,409.70, 1,145,114.55 and 705,672.90

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Solution

The fourth proportional to 763,409.70, 1,145,114.55 and 705,672.90 is: 1,058,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,409.70 : 1,145,114.55 = 705,672.90 : x
  2. Step 2: Convert to fraction form
    763,409.70/1,145,114.55 = 705,672.90/x
  3. Step 3: Cross multiply
    763,409.70x = 1,145,114.55 × 705,672.90
  4. Step 4: Simplify right side
    763,409.70x = 808,076,305,330.70
  5. Step 5: Solve for x
    x = 808,076,305,330.70/763,409.70
  6. Step 6: Final answer
    x = 1,058,509.35

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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.