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Finding the Fourth Proportional to 574,885.60, 862,328.40 and 518,898.40

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Solution

The fourth proportional to 574,885.60, 862,328.40 and 518,898.40 is: 778,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,885.60 : 862,328.40 = 518,898.40 : x
  2. Step 2: Convert to fraction form
    574,885.60/862,328.40 = 518,898.40/x
  3. Step 3: Cross multiply
    574,885.60x = 862,328.40 × 518,898.40
  4. Step 4: Simplify right side
    574,885.60x = 447,460,827,034.56
  5. Step 5: Solve for x
    x = 447,460,827,034.56/574,885.60
  6. Step 6: Final answer
    x = 778,347.60

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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.