Home / 705,762.80-1,058,644.20-390,834.80

Finding the Fourth Proportional to 705,762.80, 1,058,644.20 and 390,834.80

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Solution

The fourth proportional to 705,762.80, 1,058,644.20 and 390,834.80 is: 586,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,762.80 : 1,058,644.20 = 390,834.80 : x
  2. Step 2: Convert to fraction form
    705,762.80/1,058,644.20 = 390,834.80/x
  3. Step 3: Cross multiply
    705,762.80x = 1,058,644.20 × 390,834.80
  4. Step 4: Simplify right side
    705,762.80x = 413,754,994,178.16
  5. Step 5: Solve for x
    x = 413,754,994,178.16/705,762.80
  6. Step 6: Final answer
    x = 586,252.20

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Double scale
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Similar ratio
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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.