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Finding the Fourth Proportional to 581,242.80, 872,555.40 and 328,724.40

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Solution

The fourth proportional to 581,242.80, 872,555.40 and 328,724.40 is: 493,477.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,242.80 : 872,555.40 = 328,724.40 : x
  2. Step 2: Convert to fraction form
    581,242.80/872,555.40 = 328,724.40/x
  3. Step 3: Cross multiply
    581,242.80x = 872,555.40 × 328,724.40
  4. Step 4: Simplify right side
    581,242.80x = 286,830,250,331.76
  5. Step 5: Solve for x
    x = 286,830,250,331.76/581,242.80
  6. Step 6: Final answer
    x = 493,477.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.