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Finding the Fourth Proportional to 908,509.60, 1,363,282.80 and 347,946.40

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Solution

The fourth proportional to 908,509.60, 1,363,282.80 and 347,946.40 is: 522,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,509.60 : 1,363,282.80 = 347,946.40 : x
  2. Step 2: Convert to fraction form
    908,509.60/1,363,282.80 = 347,946.40/x
  3. Step 3: Cross multiply
    908,509.60x = 1,363,282.80 × 347,946.40
  4. Step 4: Simplify right side
    908,509.60x = 474,349,342,441.92
  5. Step 5: Solve for x
    x = 474,349,342,441.92/908,509.60
  6. Step 6: Final answer
    x = 522,118.14

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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.