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Finding the Fourth Proportional to 556,000.65, 767,280.51 and 301,351.91

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Solution

The fourth proportional to 556,000.65, 767,280.51 and 301,351.91 is: 415,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,000.65 : 767,280.51 = 301,351.91 : x
  2. Step 2: Convert to fraction form
    556,000.65/767,280.51 = 301,351.91/x
  3. Step 3: Cross multiply
    556,000.65x = 767,280.51 × 301,351.91
  4. Step 4: Simplify right side
    556,000.65x = 231,221,443,357.87
  5. Step 5: Solve for x
    x = 231,221,443,357.87/556,000.65
  6. Step 6: Final answer
    x = 415,865.42

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1.5x scale

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.