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Finding the Fourth Proportional to 518,904.54, 716,100.96 and 289,460.16

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Solution

The fourth proportional to 518,904.54, 716,100.96 and 289,460.16 is: 399,462.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,904.54 : 716,100.96 = 289,460.16 : x
  2. Step 2: Convert to fraction form
    518,904.54/716,100.96 = 289,460.16/x
  3. Step 3: Cross multiply
    518,904.54x = 716,100.96 × 289,460.16
  4. Step 4: Simplify right side
    518,904.54x = 207,282,698,457.75
  5. Step 5: Solve for x
    x = 207,282,698,457.75/518,904.54
  6. Step 6: Final answer
    x = 399,462.10

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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.