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Finding the Fourth Proportional to 807,205.80, 1,210,808.70 and 452,911.80

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Solution

The fourth proportional to 807,205.80, 1,210,808.70 and 452,911.80 is: 679,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,205.80 : 1,210,808.70 = 452,911.80 : x
  2. Step 2: Convert to fraction form
    807,205.80/1,210,808.70 = 452,911.80/x
  3. Step 3: Cross multiply
    807,205.80x = 1,210,808.70 × 452,911.80
  4. Step 4: Simplify right side
    807,205.80x = 548,389,547,772.66
  5. Step 5: Solve for x
    x = 548,389,547,772.66/807,205.80
  6. Step 6: Final answer
    x = 679,367.70

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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.