Home / 855,352.21-1,180,681.10-492,920.50

Finding the Fourth Proportional to 855,352.21, 1,180,681.10 and 492,920.50

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Solution

The fourth proportional to 855,352.21, 1,180,681.10 and 492,920.50 is: 680,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,352.21 : 1,180,681.10 = 492,920.50 : x
  2. Step 2: Convert to fraction form
    855,352.21/1,180,681.10 = 492,920.50/x
  3. Step 3: Cross multiply
    855,352.21x = 1,180,681.10 × 492,920.50
  4. Step 4: Simplify right side
    855,352.21x = 581,981,918,152.55
  5. Step 5: Solve for x
    x = 581,981,918,152.55/855,352.21
  6. Step 6: Final answer
    x = 680,400.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.