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Finding the Fourth Proportional to 763,715.60, 1,145,573.40 and 707,728.40

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Solution

The fourth proportional to 763,715.60, 1,145,573.40 and 707,728.40 is: 1,061,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,715.60 : 1,145,573.40 = 707,728.40 : x
  2. Step 2: Convert to fraction form
    763,715.60/1,145,573.40 = 707,728.40/x
  3. Step 3: Cross multiply
    763,715.60x = 1,145,573.40 × 707,728.40
  4. Step 4: Simplify right side
    763,715.60x = 810,754,829,464.56
  5. Step 5: Solve for x
    x = 810,754,829,464.56/763,715.60
  6. Step 6: Final answer
    x = 1,061,592.60

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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.