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Finding the Fourth Proportional to 670,530.23, 924,952.98 and 398,685.79

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Solution

The fourth proportional to 670,530.23, 924,952.98 and 398,685.79 is: 549,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,530.23 : 924,952.98 = 398,685.79 : x
  2. Step 2: Convert to fraction form
    670,530.23/924,952.98 = 398,685.79/x
  3. Step 3: Cross multiply
    670,530.23x = 924,952.98 × 398,685.79
  4. Step 4: Simplify right side
    670,530.23x = 368,765,612,195.42
  5. Step 5: Solve for x
    x = 368,765,612,195.42/670,530.23
  6. Step 6: Final answer
    x = 549,961.20

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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.