Home / 890,434.88-1,228,619.04-527,699.12

Finding the Fourth Proportional to 890,434.88, 1,228,619.04 and 527,699.12

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Solution

The fourth proportional to 890,434.88, 1,228,619.04 and 527,699.12 is: 728,117.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,434.88 : 1,228,619.04 = 527,699.12 : x
  2. Step 2: Convert to fraction form
    890,434.88/1,228,619.04 = 527,699.12/x
  3. Step 3: Cross multiply
    890,434.88x = 1,228,619.04 × 527,699.12
  4. Step 4: Simplify right side
    890,434.88x = 648,341,186,223.25
  5. Step 5: Solve for x
    x = 648,341,186,223.25/890,434.88
  6. Step 6: Final answer
    x = 728,117.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.