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Finding the Fourth Proportional to 518,037.10, 714,880.32 and 288,594.06

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Solution

The fourth proportional to 518,037.10, 714,880.32 and 288,594.06 is: 398,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,037.10 : 714,880.32 = 288,594.06 : x
  2. Step 2: Convert to fraction form
    518,037.10/714,880.32 = 288,594.06/x
  3. Step 3: Cross multiply
    518,037.10x = 714,880.32 × 288,594.06
  4. Step 4: Simplify right side
    518,037.10x = 206,310,213,962.90
  5. Step 5: Solve for x
    x = 206,310,213,962.90/518,037.10
  6. Step 6: Final answer
    x = 398,253.74

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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.