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Finding the Fourth Proportional to 709,506.33, 979,141.58 and 403,574.86

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Solution

The fourth proportional to 709,506.33, 979,141.58 and 403,574.86 is: 556,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,506.33 : 979,141.58 = 403,574.86 : x
  2. Step 2: Convert to fraction form
    709,506.33/979,141.58 = 403,574.86/x
  3. Step 3: Cross multiply
    709,506.33x = 979,141.58 × 403,574.86
  4. Step 4: Simplify right side
    709,506.33x = 395,156,924,050.80
  5. Step 5: Solve for x
    x = 395,156,924,050.80/709,506.33
  6. Step 6: Final answer
    x = 556,946.30

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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.