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Finding the Fourth Proportional to 453,284.80, 679,635.36 and 390,124.16

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Solution

The fourth proportional to 453,284.80, 679,635.36 and 390,124.16 is: 584,935.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,284.80 : 679,635.36 = 390,124.16 : x
  2. Step 2: Convert to fraction form
    453,284.80/679,635.36 = 390,124.16/x
  3. Step 3: Cross multiply
    453,284.80x = 679,635.36 × 390,124.16
  4. Step 4: Simplify right side
    453,284.80x = 265,142,173,926.30
  5. Step 5: Solve for x
    x = 265,142,173,926.30/453,284.80
  6. Step 6: Final answer
    x = 584,935.06

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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.