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Finding the Fourth Proportional to 549,477.60, 824,216.40 and 390,045.30

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Solution

The fourth proportional to 549,477.60, 824,216.40 and 390,045.30 is: 585,067.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,477.60 : 824,216.40 = 390,045.30 : x
  2. Step 2: Convert to fraction form
    549,477.60/824,216.40 = 390,045.30/x
  3. Step 3: Cross multiply
    549,477.60x = 824,216.40 × 390,045.30
  4. Step 4: Simplify right side
    549,477.60x = 321,481,733,002.92
  5. Step 5: Solve for x
    x = 321,481,733,002.92/549,477.60
  6. Step 6: Final answer
    x = 585,067.95

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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.