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Finding the Fourth Proportional to 518,846.02, 716,008.59 and 289,397.40

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Solution

The fourth proportional to 518,846.02, 716,008.59 and 289,397.40 is: 399,369.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,846.02 : 716,008.59 = 289,397.40 : x
  2. Step 2: Convert to fraction form
    518,846.02/716,008.59 = 289,397.40/x
  3. Step 3: Cross multiply
    518,846.02x = 716,008.59 × 289,397.40
  4. Step 4: Simplify right side
    518,846.02x = 207,211,021,638.63
  5. Step 5: Solve for x
    x = 207,211,021,638.63/518,846.02
  6. Step 6: Final answer
    x = 399,369.01

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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.