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Finding the Fourth Proportional to 586,464.40, 878,659.80 and 520,109.20

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Solution

The fourth proportional to 586,464.40, 878,659.80 and 520,109.20 is: 779,244.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,464.40 : 878,659.80 = 520,109.20 : x
  2. Step 2: Convert to fraction form
    586,464.40/878,659.80 = 520,109.20/x
  3. Step 3: Cross multiply
    586,464.40x = 878,659.80 × 520,109.20
  4. Step 4: Simplify right side
    586,464.40x = 456,999,045,650.16
  5. Step 5: Solve for x
    x = 456,999,045,650.16/586,464.40
  6. Step 6: Final answer
    x = 779,244.31

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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.