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Finding the Fourth Proportional to 664,689.40, 917,266.62 and 362,883.40

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Solution

The fourth proportional to 664,689.40, 917,266.62 and 362,883.40 is: 500,776.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,689.40 : 917,266.62 = 362,883.40 : x
  2. Step 2: Convert to fraction form
    664,689.40/917,266.62 = 362,883.40/x
  3. Step 3: Cross multiply
    664,689.40x = 917,266.62 × 362,883.40
  4. Step 4: Simplify right side
    664,689.40x = 332,860,829,772.11
  5. Step 5: Solve for x
    x = 332,860,829,772.11/664,689.40
  6. Step 6: Final answer
    x = 500,776.50

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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.