Home / 705,364.20-1,058,499.90-390,047.40

Finding the Fourth Proportional to 705,364.20, 1,058,499.90 and 390,047.40

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Solution

The fourth proportional to 705,364.20, 1,058,499.90 and 390,047.40 is: 585,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,364.20 : 1,058,499.90 = 390,047.40 : x
  2. Step 2: Convert to fraction form
    705,364.20/1,058,499.90 = 390,047.40/x
  3. Step 3: Cross multiply
    705,364.20x = 1,058,499.90 × 390,047.40
  4. Step 4: Simplify right side
    705,364.20x = 412,865,133,895.26
  5. Step 5: Solve for x
    x = 412,865,133,895.26/705,364.20
  6. Step 6: Final answer
    x = 585,321.93

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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.