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Finding the Fourth Proportional to 679,152, 1,017,176.76 and 324,417

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Solution

The fourth proportional to 679,152, 1,017,176.76 and 324,417 is: 485,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,152 : 1,017,176.76 = 324,417 : x
  2. Step 2: Convert to fraction form
    679,152/1,017,176.76 = 324,417/x
  3. Step 3: Cross multiply
    679,152x = 1,017,176.76 × 324,417
  4. Step 4: Simplify right side
    679,152x = 329,989,432,948.92
  5. Step 5: Solve for x
    x = 329,989,432,948.92/679,152
  6. Step 6: Final answer
    x = 485,884.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.