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Finding the Fourth Proportional to 670,363.92, 924,998.22 and 398,330.64

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Solution

The fourth proportional to 670,363.92, 924,998.22 and 398,330.64 is: 549,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,363.92 : 924,998.22 = 398,330.64 : x
  2. Step 2: Convert to fraction form
    670,363.92/924,998.22 = 398,330.64/x
  3. Step 3: Cross multiply
    670,363.92x = 924,998.22 × 398,330.64
  4. Step 4: Simplify right side
    670,363.92x = 368,455,132,971.46
  5. Step 5: Solve for x
    x = 368,455,132,971.46/670,363.92
  6. Step 6: Final answer
    x = 549,634.49

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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.