Home / 890,890.38-1,229,607.36-528,515.42

Finding the Fourth Proportional to 890,890.38, 1,229,607.36 and 528,515.42

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Solution

The fourth proportional to 890,890.38, 1,229,607.36 and 528,515.42 is: 729,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,890.38 : 1,229,607.36 = 528,515.42 : x
  2. Step 2: Convert to fraction form
    890,890.38/1,229,607.36 = 528,515.42/x
  3. Step 3: Cross multiply
    890,890.38x = 1,229,607.36 × 528,515.42
  4. Step 4: Simplify right side
    890,890.38x = 649,866,444,157.46
  5. Step 5: Solve for x
    x = 649,866,444,157.46/890,890.38
  6. Step 6: Final answer
    x = 729,457.25

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Half scale
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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.