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Finding the Fourth Proportional to 670,056.90, 924,894.01 and 428,988.75

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Solution

The fourth proportional to 670,056.90, 924,894.01 and 428,988.75 is: 592,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,056.90 : 924,894.01 = 428,988.75 : x
  2. Step 2: Convert to fraction form
    670,056.90/924,894.01 = 428,988.75/x
  3. Step 3: Cross multiply
    670,056.90x = 924,894.01 × 428,988.75
  4. Step 4: Simplify right side
    670,056.90x = 396,769,125,232.39
  5. Step 5: Solve for x
    x = 396,769,125,232.39/670,056.90
  6. Step 6: Final answer
    x = 592,142.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.