Home / 875,439.20-1,312,138.20-402,172.40

Finding the Fourth Proportional to 875,439.20, 1,312,138.20 and 402,172.40

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Solution

The fourth proportional to 875,439.20, 1,312,138.20 and 402,172.40 is: 602,789.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,439.20 : 1,312,138.20 = 402,172.40 : x
  2. Step 2: Convert to fraction form
    875,439.20/1,312,138.20 = 402,172.40/x
  3. Step 3: Cross multiply
    875,439.20x = 1,312,138.20 × 402,172.40
  4. Step 4: Simplify right side
    875,439.20x = 527,705,769,025.68
  5. Step 5: Solve for x
    x = 527,705,769,025.68/875,439.20
  6. Step 6: Final answer
    x = 602,789.74

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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.