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Finding the Fourth Proportional to 899,065.80, 1,348,598.70 and 615,630.60

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Solution

The fourth proportional to 899,065.80, 1,348,598.70 and 615,630.60 is: 923,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,065.80 : 1,348,598.70 = 615,630.60 : x
  2. Step 2: Convert to fraction form
    899,065.80/1,348,598.70 = 615,630.60/x
  3. Step 3: Cross multiply
    899,065.80x = 1,348,598.70 × 615,630.60
  4. Step 4: Simplify right side
    899,065.80x = 830,238,626,840.22
  5. Step 5: Solve for x
    x = 830,238,626,840.22/899,065.80
  6. Step 6: Final answer
    x = 923,445.90

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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.