Home / 786,681.60-1,179,244.80-312,734.40

Finding the Fourth Proportional to 786,681.60, 1,179,244.80 and 312,734.40

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Solution

The fourth proportional to 786,681.60, 1,179,244.80 and 312,734.40 is: 468,792.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,681.60 : 1,179,244.80 = 312,734.40 : x
  2. Step 2: Convert to fraction form
    786,681.60/1,179,244.80 = 312,734.40/x
  3. Step 3: Cross multiply
    786,681.60x = 1,179,244.80 × 312,734.40
  4. Step 4: Simplify right side
    786,681.60x = 368,790,414,981.12
  5. Step 5: Solve for x
    x = 368,790,414,981.12/786,681.60
  6. Step 6: Final answer
    x = 468,792.48

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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.