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Finding the Fourth Proportional to 807,218.40, 1,210,730.40 and 333,854.40

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Solution

The fourth proportional to 807,218.40, 1,210,730.40 and 333,854.40 is: 500,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,218.40 : 1,210,730.40 = 333,854.40 : x
  2. Step 2: Convert to fraction form
    807,218.40/1,210,730.40 = 333,854.40/x
  3. Step 3: Cross multiply
    807,218.40x = 1,210,730.40 × 333,854.40
  4. Step 4: Simplify right side
    807,218.40x = 404,207,671,253.76
  5. Step 5: Solve for x
    x = 404,207,671,253.76/807,218.40
  6. Step 6: Final answer
    x = 500,741.40

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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.