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Finding the Fourth Proportional to 612,070.90, 857,599.10 and 612,070.90

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Solution

The fourth proportional to 612,070.90, 857,599.10 and 612,070.90 is: 857,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,070.90 : 857,599.10 = 612,070.90 : x
  2. Step 2: Convert to fraction form
    612,070.90/857,599.10 = 612,070.90/x
  3. Step 3: Cross multiply
    612,070.90x = 857,599.10 × 612,070.90
  4. Step 4: Simplify right side
    612,070.90x = 524,911,452,976.19
  5. Step 5: Solve for x
    x = 524,911,452,976.19/612,070.90
  6. Step 6: Final answer
    x = 857,599.10

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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.