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Finding the Fourth Proportional to 581,820.99, 802,457.52 and 398,168.34

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Solution

The fourth proportional to 581,820.99, 802,457.52 and 398,168.34 is: 549,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,820.99 : 802,457.52 = 398,168.34 : x
  2. Step 2: Convert to fraction form
    581,820.99/802,457.52 = 398,168.34/x
  3. Step 3: Cross multiply
    581,820.99x = 802,457.52 × 398,168.34
  4. Step 4: Simplify right side
    581,820.99x = 319,513,178,658.92
  5. Step 5: Solve for x
    x = 319,513,178,658.92/581,820.99
  6. Step 6: Final answer
    x = 549,160.63

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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.