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Finding the Fourth Proportional to 485,427.60, 728,141.40 and 464,950.80

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Solution

The fourth proportional to 485,427.60, 728,141.40 and 464,950.80 is: 697,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,427.60 : 728,141.40 = 464,950.80 : x
  2. Step 2: Convert to fraction form
    485,427.60/728,141.40 = 464,950.80/x
  3. Step 3: Cross multiply
    485,427.60x = 728,141.40 × 464,950.80
  4. Step 4: Simplify right side
    485,427.60x = 338,549,926,443.12
  5. Step 5: Solve for x
    x = 338,549,926,443.12/485,427.60
  6. Step 6: Final answer
    x = 697,426.20

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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.