Home / 513,541,120.75-708,626,959.34-287,492,482.49

Finding the Fourth Proportional to 513,541,120.75, 708,626,959.34 and 287,492,482.49

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Solution

The fourth proportional to 513,541,120.75, 708,626,959.34 and 287,492,482.49 is: 396,706,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,541,120.75 : 708,626,959.34 = 287,492,482.49 : x
  2. Step 2: Convert to fraction form
    513,541,120.75/708,626,959.34 = 287,492,482.49/x
  3. Step 3: Cross multiply
    513,541,120.75x = 708,626,959.34 × 287,492,482.49
  4. Step 4: Simplify right side
    513,541,120.75x = 203,724,923,696,453,792
  5. Step 5: Solve for x
    x = 203,724,923,696,453,792/513,541,120.75
  6. Step 6: Final answer
    x = 396,706,155.49

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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.