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Finding the Fourth Proportional to 660,045.63, 910,706.85 and 373,565.72

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Solution

The fourth proportional to 660,045.63, 910,706.85 and 373,565.72 is: 515,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,045.63 : 910,706.85 = 373,565.72 : x
  2. Step 2: Convert to fraction form
    660,045.63/910,706.85 = 373,565.72/x
  3. Step 3: Cross multiply
    660,045.63x = 910,706.85 × 373,565.72
  4. Step 4: Simplify right side
    660,045.63x = 340,208,855,575.65
  5. Step 5: Solve for x
    x = 340,208,855,575.65/660,045.63
  6. Step 6: Final answer
    x = 515,432.33

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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.