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Finding the Fourth Proportional to 615,065.60, 920,848.80 and 545,081.60

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Solution

The fourth proportional to 615,065.60, 920,848.80 and 545,081.60 is: 816,071.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,065.60 : 920,848.80 = 545,081.60 : x
  2. Step 2: Convert to fraction form
    615,065.60/920,848.80 = 545,081.60/x
  3. Step 3: Cross multiply
    615,065.60x = 920,848.80 × 545,081.60
  4. Step 4: Simplify right side
    615,065.60x = 501,937,737,262.08
  5. Step 5: Solve for x
    x = 501,937,737,262.08/615,065.60
  6. Step 6: Final answer
    x = 816,071.87

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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.