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Finding the Fourth Proportional to 707,090.40, 1,060,700.40 and 286,279.20

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Solution

The fourth proportional to 707,090.40, 1,060,700.40 and 286,279.20 is: 429,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,090.40 : 1,060,700.40 = 286,279.20 : x
  2. Step 2: Convert to fraction form
    707,090.40/1,060,700.40 = 286,279.20/x
  3. Step 3: Cross multiply
    707,090.40x = 1,060,700.40 × 286,279.20
  4. Step 4: Simplify right side
    707,090.40x = 303,656,461,951.68
  5. Step 5: Solve for x
    x = 303,656,461,951.68/707,090.40
  6. Step 6: Final answer
    x = 429,445.04

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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.