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Finding the Fourth Proportional to 909,699.60, 1,364,549.40 and 510,620.70

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Solution

The fourth proportional to 909,699.60, 1,364,549.40 and 510,620.70 is: 765,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,699.60 : 1,364,549.40 = 510,620.70 : x
  2. Step 2: Convert to fraction form
    909,699.60/1,364,549.40 = 510,620.70/x
  3. Step 3: Cross multiply
    909,699.60x = 1,364,549.40 × 510,620.70
  4. Step 4: Simplify right side
    909,699.60x = 696,767,169,812.58
  5. Step 5: Solve for x
    x = 696,767,169,812.58/909,699.60
  6. Step 6: Final answer
    x = 765,931.05

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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.