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Finding the Fourth Proportional to 808,672.80, 1,213,009.20 and 556,730.40

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Solution

The fourth proportional to 808,672.80, 1,213,009.20 and 556,730.40 is: 835,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,672.80 : 1,213,009.20 = 556,730.40 : x
  2. Step 2: Convert to fraction form
    808,672.80/1,213,009.20 = 556,730.40/x
  3. Step 3: Cross multiply
    808,672.80x = 1,213,009.20 × 556,730.40
  4. Step 4: Simplify right side
    808,672.80x = 675,319,097,119.68
  5. Step 5: Solve for x
    x = 675,319,097,119.68/808,672.80
  6. Step 6: Final answer
    x = 835,095.60

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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.