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Finding the Fourth Proportional to 898,272.30, 1,347,408.45 and 425,880.30

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Solution

The fourth proportional to 898,272.30, 1,347,408.45 and 425,880.30 is: 638,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,272.30 : 1,347,408.45 = 425,880.30 : x
  2. Step 2: Convert to fraction form
    898,272.30/1,347,408.45 = 425,880.30/x
  3. Step 3: Cross multiply
    898,272.30x = 1,347,408.45 × 425,880.30
  4. Step 4: Simplify right side
    898,272.30x = 573,834,714,908.54
  5. Step 5: Solve for x
    x = 573,834,714,908.54/898,272.30
  6. Step 6: Final answer
    x = 638,820.45

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Half scale
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Double scale
Find fourth proportional to 898,273.30, 1,347,409.95 and 425,881.30
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.