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Finding the Fourth Proportional to 896,000.40, 1,236,480 and 493,592.40

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Solution

The fourth proportional to 896,000.40, 1,236,480 and 493,592.40 is: 681,157.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,000.40 : 1,236,480 = 493,592.40 : x
  2. Step 2: Convert to fraction form
    896,000.40/1,236,480 = 493,592.40/x
  3. Step 3: Cross multiply
    896,000.40x = 1,236,480 × 493,592.40
  4. Step 4: Simplify right side
    896,000.40x = 610,317,130,752
  5. Step 5: Solve for x
    x = 610,317,130,752/896,000.40
  6. Step 6: Final answer
    x = 681,157.21

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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.