Home / 926,456.80-1,388,648.40-393,887.20

Finding the Fourth Proportional to 926,456.80, 1,388,648.40 and 393,887.20

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Solution

The fourth proportional to 926,456.80, 1,388,648.40 and 393,887.20 is: 590,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,456.80 : 1,388,648.40 = 393,887.20 : x
  2. Step 2: Convert to fraction form
    926,456.80/1,388,648.40 = 393,887.20/x
  3. Step 3: Cross multiply
    926,456.80x = 1,388,648.40 × 393,887.20
  4. Step 4: Simplify right side
    926,456.80x = 546,970,830,060.48
  5. Step 5: Solve for x
    x = 546,970,830,060.48/926,456.80
  6. Step 6: Final answer
    x = 590,390.00

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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.