Home / 705,737.80-1,058,606.70-390,809.80

Finding the Fourth Proportional to 705,737.80, 1,058,606.70 and 390,809.80

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Solution

The fourth proportional to 705,737.80, 1,058,606.70 and 390,809.80 is: 586,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,737.80 : 1,058,606.70 = 390,809.80 : x
  2. Step 2: Convert to fraction form
    705,737.80/1,058,606.70 = 390,809.80/x
  3. Step 3: Cross multiply
    705,737.80x = 1,058,606.70 × 390,809.80
  4. Step 4: Simplify right side
    705,737.80x = 413,713,872,705.66
  5. Step 5: Solve for x
    x = 413,713,872,705.66/705,737.80
  6. Step 6: Final answer
    x = 586,214.70

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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.