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Finding the Fourth Proportional to 614,552.16, 847,435.32 and 485,276.16

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Solution

The fourth proportional to 614,552.16, 847,435.32 and 485,276.16 is: 669,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,552.16 : 847,435.32 = 485,276.16 : x
  2. Step 2: Convert to fraction form
    614,552.16/847,435.32 = 485,276.16/x
  3. Step 3: Cross multiply
    614,552.16x = 847,435.32 × 485,276.16
  4. Step 4: Simplify right side
    614,552.16x = 411,240,157,937.97
  5. Step 5: Solve for x
    x = 411,240,157,937.97/614,552.16
  6. Step 6: Final answer
    x = 669,170.47

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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.