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Finding the Fourth Proportional to 649,435.40, 974,153.10 and 491,971.40

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Solution

The fourth proportional to 649,435.40, 974,153.10 and 491,971.40 is: 737,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,435.40 : 974,153.10 = 491,971.40 : x
  2. Step 2: Convert to fraction form
    649,435.40/974,153.10 = 491,971.40/x
  3. Step 3: Cross multiply
    649,435.40x = 974,153.10 × 491,971.40
  4. Step 4: Simplify right side
    649,435.40x = 479,255,464,421.34
  5. Step 5: Solve for x
    x = 479,255,464,421.34/649,435.40
  6. Step 6: Final answer
    x = 737,957.10

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Half scale
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Double scale
Find fourth proportional to 649,436.40, 974,154.60 and 491,972.40
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.