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Finding the Fourth Proportional to 909,709.60, 1,364,564.40 and 510,630.70

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Solution

The fourth proportional to 909,709.60, 1,364,564.40 and 510,630.70 is: 765,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,709.60 : 1,364,564.40 = 510,630.70 : x
  2. Step 2: Convert to fraction form
    909,709.60/1,364,564.40 = 510,630.70/x
  3. Step 3: Cross multiply
    909,709.60x = 1,364,564.40 × 510,630.70
  4. Step 4: Simplify right side
    909,709.60x = 696,788,474,767.08
  5. Step 5: Solve for x
    x = 696,788,474,767.08/909,709.60
  6. Step 6: Final answer
    x = 765,946.05

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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.