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Finding the Fourth Proportional to 879,794.20, 1,319,428 and 458,840.44

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Solution

The fourth proportional to 879,794.20, 1,319,428 and 458,840.44 is: 688,123.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,794.20 : 1,319,428 = 458,840.44 : x
  2. Step 2: Convert to fraction form
    879,794.20/1,319,428 = 458,840.44/x
  3. Step 3: Cross multiply
    879,794.20x = 1,319,428 × 458,840.44
  4. Step 4: Simplify right side
    879,794.20x = 605,406,924,068.32
  5. Step 5: Solve for x
    x = 605,406,924,068.32/879,794.20
  6. Step 6: Final answer
    x = 688,123.34

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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.