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Finding the Fourth Proportional to 670,030.32, 924,720.46 and 398,100.44

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Solution

The fourth proportional to 670,030.32, 924,720.46 and 398,100.44 is: 549,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,030.32 : 924,720.46 = 398,100.44 : x
  2. Step 2: Convert to fraction form
    670,030.32/924,720.46 = 398,100.44/x
  3. Step 3: Cross multiply
    670,030.32x = 924,720.46 × 398,100.44
  4. Step 4: Simplify right side
    670,030.32x = 368,131,622,003.00
  5. Step 5: Solve for x
    x = 368,131,622,003.00/670,030.32
  6. Step 6: Final answer
    x = 549,425.32

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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.