Home / 645,089.16-890,339.40-373,119.24

Finding the Fourth Proportional to 645,089.16, 890,339.40 and 373,119.24

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Solution

The fourth proportional to 645,089.16, 890,339.40 and 373,119.24 is: 514,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,089.16 : 890,339.40 = 373,119.24 : x
  2. Step 2: Convert to fraction form
    645,089.16/890,339.40 = 373,119.24/x
  3. Step 3: Cross multiply
    645,089.16x = 890,339.40 × 373,119.24
  4. Step 4: Simplify right side
    645,089.16x = 332,202,760,270.06
  5. Step 5: Solve for x
    x = 332,202,760,270.06/645,089.16
  6. Step 6: Final answer
    x = 514,971.85

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.