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Finding the Fourth Proportional to 890,602.70, 1,336,066.05 and 291,397.10

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Solution

The fourth proportional to 890,602.70, 1,336,066.05 and 291,397.10 is: 437,148.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,602.70 : 1,336,066.05 = 291,397.10 : x
  2. Step 2: Convert to fraction form
    890,602.70/1,336,066.05 = 291,397.10/x
  3. Step 3: Cross multiply
    890,602.70x = 1,336,066.05 × 291,397.10
  4. Step 4: Simplify right side
    890,602.70x = 389,325,772,378.46
  5. Step 5: Solve for x
    x = 389,325,772,378.46/890,602.70
  6. Step 6: Final answer
    x = 437,148.65

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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.