Home / 890,888.85-1,229,605.29-528,513.90

Finding the Fourth Proportional to 890,888.85, 1,229,605.29 and 528,513.90

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Solution

The fourth proportional to 890,888.85, 1,229,605.29 and 528,513.90 is: 729,455.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,888.85 : 1,229,605.29 = 528,513.90 : x
  2. Step 2: Convert to fraction form
    890,888.85/1,229,605.29 = 528,513.90/x
  3. Step 3: Cross multiply
    890,888.85x = 1,229,605.29 × 528,513.90
  4. Step 4: Simplify right side
    890,888.85x = 649,863,487,278.53
  5. Step 5: Solve for x
    x = 649,863,487,278.53/890,888.85
  6. Step 6: Final answer
    x = 729,455.18

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Double scale
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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.