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Finding the Fourth Proportional to 551,801.79, 761,506.52 and 310,089.15

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Solution

The fourth proportional to 551,801.79, 761,506.52 and 310,089.15 is: 427,934.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,801.79 : 761,506.52 = 310,089.15 : x
  2. Step 2: Convert to fraction form
    551,801.79/761,506.52 = 310,089.15/x
  3. Step 3: Cross multiply
    551,801.79x = 761,506.52 × 310,089.15
  4. Step 4: Simplify right side
    551,801.79x = 236,134,907,955.81
  5. Step 5: Solve for x
    x = 236,134,907,955.81/551,801.79
  6. Step 6: Final answer
    x = 427,934.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.