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Finding the Fourth Proportional to 660,646.60, 911,756.30 and 370,307.49

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Solution

The fourth proportional to 660,646.60, 911,756.30 and 370,307.49 is: 511,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,646.60 : 911,756.30 = 370,307.49 : x
  2. Step 2: Convert to fraction form
    660,646.60/911,756.30 = 370,307.49/x
  3. Step 3: Cross multiply
    660,646.60x = 911,756.30 × 370,307.49
  4. Step 4: Simplify right side
    660,646.60x = 337,630,186,944.69
  5. Step 5: Solve for x
    x = 337,630,186,944.69/660,646.60
  6. Step 6: Final answer
    x = 511,060.21

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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.