Home / 518,401.04-714,918.96-355,294.58

Finding the Fourth Proportional to 518,401.04, 714,918.96 and 355,294.58

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Solution

The fourth proportional to 518,401.04, 714,918.96 and 355,294.58 is: 489,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,401.04 : 714,918.96 = 355,294.58 : x
  2. Step 2: Convert to fraction form
    518,401.04/714,918.96 = 355,294.58/x
  3. Step 3: Cross multiply
    518,401.04x = 714,918.96 × 355,294.58
  4. Step 4: Simplify right side
    518,401.04x = 254,006,831,627.24
  5. Step 5: Solve for x
    x = 254,006,831,627.24/518,401.04
  6. Step 6: Final answer
    x = 489,981.33

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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.