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Finding the Fourth Proportional to 612,114.40, 918,171.60 and 462,815.20

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Solution

The fourth proportional to 612,114.40, 918,171.60 and 462,815.20 is: 694,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,114.40 : 918,171.60 = 462,815.20 : x
  2. Step 2: Convert to fraction form
    612,114.40/918,171.60 = 462,815.20/x
  3. Step 3: Cross multiply
    612,114.40x = 918,171.60 × 462,815.20
  4. Step 4: Simplify right side
    612,114.40x = 424,943,772,688.32
  5. Step 5: Solve for x
    x = 424,943,772,688.32/612,114.40
  6. Step 6: Final answer
    x = 694,222.80

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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.