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Finding the Fourth Proportional to 670,276.62, 924,878.58 and 398,243.82

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Solution

The fourth proportional to 670,276.62, 924,878.58 and 398,243.82 is: 549,515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,276.62 : 924,878.58 = 398,243.82 : x
  2. Step 2: Convert to fraction form
    670,276.62/924,878.58 = 398,243.82/x
  3. Step 3: Cross multiply
    670,276.62x = 924,878.58 × 398,243.82
  4. Step 4: Simplify right side
    670,276.62x = 368,327,178,735.38
  5. Step 5: Solve for x
    x = 368,327,178,735.38/670,276.62
  6. Step 6: Final answer
    x = 549,515.18

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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.