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Finding the Fourth Proportional to 660,045.20, 910,706.24 and 373,565.28

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Solution

The fourth proportional to 660,045.20, 910,706.24 and 373,565.28 is: 515,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,045.20 : 910,706.24 = 373,565.28 : x
  2. Step 2: Convert to fraction form
    660,045.20/910,706.24 = 373,565.28/x
  3. Step 3: Cross multiply
    660,045.20x = 910,706.24 × 373,565.28
  4. Step 4: Simplify right side
    660,045.20x = 340,208,231,543.35
  5. Step 5: Solve for x
    x = 340,208,231,543.35/660,045.20
  6. Step 6: Final answer
    x = 515,431.72

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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.