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Finding the Fourth Proportional to 670,240.88, 924,909 and 368,432.72

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Solution

The fourth proportional to 670,240.88, 924,909 and 368,432.72 is: 508,424.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,240.88 : 924,909 = 368,432.72 : x
  2. Step 2: Convert to fraction form
    670,240.88/924,909 = 368,432.72/x
  3. Step 3: Cross multiply
    670,240.88x = 924,909 × 368,432.72
  4. Step 4: Simplify right side
    670,240.88x = 340,766,738,622.48
  5. Step 5: Solve for x
    x = 340,766,738,622.48/670,240.88
  6. Step 6: Final answer
    x = 508,424.28

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1.5x scale

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.