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Finding the Fourth Proportional to 585,227.40, 807,613.80 and 316,955.40

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Solution

The fourth proportional to 585,227.40, 807,613.80 and 316,955.40 is: 437,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,227.40 : 807,613.80 = 316,955.40 : x
  2. Step 2: Convert to fraction form
    585,227.40/807,613.80 = 316,955.40/x
  3. Step 3: Cross multiply
    585,227.40x = 807,613.80 × 316,955.40
  4. Step 4: Simplify right side
    585,227.40x = 255,977,555,024.52
  5. Step 5: Solve for x
    x = 255,977,555,024.52/585,227.40
  6. Step 6: Final answer
    x = 437,398.45

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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.