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Finding the Fourth Proportional to 581,943.16, 803,450.50 and 398,488.70

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Solution

The fourth proportional to 581,943.16, 803,450.50 and 398,488.70 is: 550,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,943.16 : 803,450.50 = 398,488.70 : x
  2. Step 2: Convert to fraction form
    581,943.16/803,450.50 = 398,488.70/x
  3. Step 3: Cross multiply
    581,943.16x = 803,450.50 × 398,488.70
  4. Step 4: Simplify right side
    581,943.16x = 320,165,946,271.76
  5. Step 5: Solve for x
    x = 320,165,946,271.76/581,943.16
  6. Step 6: Final answer
    x = 550,167.04

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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.