Home / 855,002.80-1,281,856.20-434,580.40

Finding the Fourth Proportional to 855,002.80, 1,281,856.20 and 434,580.40

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Solution

The fourth proportional to 855,002.80, 1,281,856.20 and 434,580.40 is: 651,541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,002.80 : 1,281,856.20 = 434,580.40 : x
  2. Step 2: Convert to fraction form
    855,002.80/1,281,856.20 = 434,580.40/x
  3. Step 3: Cross multiply
    855,002.80x = 1,281,856.20 × 434,580.40
  4. Step 4: Simplify right side
    855,002.80x = 557,069,580,138.48
  5. Step 5: Solve for x
    x = 557,069,580,138.48/855,002.80
  6. Step 6: Final answer
    x = 651,541.23

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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.