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Finding the Fourth Proportional to 612,116.40, 857,662.80 and 612,116.40

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Solution

The fourth proportional to 612,116.40, 857,662.80 and 612,116.40 is: 857,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,116.40 : 857,662.80 = 612,116.40 : x
  2. Step 2: Convert to fraction form
    612,116.40/857,662.80 = 612,116.40/x
  3. Step 3: Cross multiply
    612,116.40x = 857,662.80 × 612,116.40
  4. Step 4: Simplify right side
    612,116.40x = 524,989,465,549.92
  5. Step 5: Solve for x
    x = 524,989,465,549.92/612,116.40
  6. Step 6: Final answer
    x = 857,662.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.