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Finding the Fourth Proportional to 612,080.40, 857,612.40 and 612,080.40

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Solution

The fourth proportional to 612,080.40, 857,612.40 and 612,080.40 is: 857,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,080.40 : 857,612.40 = 612,080.40 : x
  2. Step 2: Convert to fraction form
    612,080.40/857,612.40 = 612,080.40/x
  3. Step 3: Cross multiply
    612,080.40x = 857,612.40 × 612,080.40
  4. Step 4: Simplify right side
    612,080.40x = 524,927,740,836.96
  5. Step 5: Solve for x
    x = 524,927,740,836.96/612,080.40
  6. Step 6: Final answer
    x = 857,612.40

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Double scale
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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.