Home / 420,138,012.60-629,781,866.10-247,525,975.80

Finding the Fourth Proportional to 420,138,012.60, 629,781,866.10 and 247,525,975.80

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Solution

The fourth proportional to 420,138,012.60, 629,781,866.10 and 247,525,975.80 is: 371,038,483.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,138,012.60 : 629,781,866.10 = 247,525,975.80 : x
  2. Step 2: Convert to fraction form
    420,138,012.60/629,781,866.10 = 247,525,975.80/x
  3. Step 3: Cross multiply
    420,138,012.60x = 629,781,866.10 × 247,525,975.80
  4. Step 4: Simplify right side
    420,138,012.60x = 155,887,370,947,547,456
  5. Step 5: Solve for x
    x = 155,887,370,947,547,456/420,138,012.60
  6. Step 6: Final answer
    x = 371,038,483.24

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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.