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Finding the Fourth Proportional to 651,640.40, 977,460.60 and 494,176.40

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Solution

The fourth proportional to 651,640.40, 977,460.60 and 494,176.40 is: 741,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,640.40 : 977,460.60 = 494,176.40 : x
  2. Step 2: Convert to fraction form
    651,640.40/977,460.60 = 494,176.40/x
  3. Step 3: Cross multiply
    651,640.40x = 977,460.60 × 494,176.40
  4. Step 4: Simplify right side
    651,640.40x = 483,037,960,449.84
  5. Step 5: Solve for x
    x = 483,037,960,449.84/651,640.40
  6. Step 6: Final answer
    x = 741,264.60

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