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Finding the Fourth Proportional to 584,978.17, 877,356.28 and 285,157.21

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Solution

The fourth proportional to 584,978.17, 877,356.28 and 285,157.21 is: 427,681.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,978.17 : 877,356.28 = 285,157.21 : x
  2. Step 2: Convert to fraction form
    584,978.17/877,356.28 = 285,157.21/x
  3. Step 3: Cross multiply
    584,978.17x = 877,356.28 × 285,157.21
  4. Step 4: Simplify right side
    584,978.17x = 250,184,468,980.78
  5. Step 5: Solve for x
    x = 250,184,468,980.78/584,978.17
  6. Step 6: Final answer
    x = 427,681.72

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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.