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Finding the Fourth Proportional to 658,367.10, 908,672.55 and 386,495.10

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Solution

The fourth proportional to 658,367.10, 908,672.55 and 386,495.10 is: 533,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,367.10 : 908,672.55 = 386,495.10 : x
  2. Step 2: Convert to fraction form
    658,367.10/908,672.55 = 386,495.10/x
  3. Step 3: Cross multiply
    658,367.10x = 908,672.55 × 386,495.10
  4. Step 4: Simplify right side
    658,367.10x = 351,197,488,079.51
  5. Step 5: Solve for x
    x = 351,197,488,079.51/658,367.10
  6. Step 6: Final answer
    x = 533,437.18

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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.