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Finding the Fourth Proportional to 719,397.86, 993,064.66 and 490,710.02

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Solution

The fourth proportional to 719,397.86, 993,064.66 and 490,710.02 is: 677,381.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,397.86 : 993,064.66 = 490,710.02 : x
  2. Step 2: Convert to fraction form
    719,397.86/993,064.66 = 490,710.02/x
  3. Step 3: Cross multiply
    719,397.86x = 993,064.66 × 490,710.02
  4. Step 4: Simplify right side
    719,397.86x = 487,306,772,977.80
  5. Step 5: Solve for x
    x = 487,306,772,977.80/719,397.86
  6. Step 6: Final answer
    x = 677,381.47

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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.