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Finding the Fourth Proportional to 485,784.60, 730,232.10 and 346,507.80

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Solution

The fourth proportional to 485,784.60, 730,232.10 and 346,507.80 is: 520,871.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,784.60 : 730,232.10 = 346,507.80 : x
  2. Step 2: Convert to fraction form
    485,784.60/730,232.10 = 346,507.80/x
  3. Step 3: Cross multiply
    485,784.60x = 730,232.10 × 346,507.80
  4. Step 4: Simplify right side
    485,784.60x = 253,031,118,460.38
  5. Step 5: Solve for x
    x = 253,031,118,460.38/485,784.60
  6. Step 6: Final answer
    x = 520,871.02

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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.