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Finding the Fourth Proportional to 584,721.50, 806,915.76 and 316,449.50

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Solution

The fourth proportional to 584,721.50, 806,915.76 and 316,449.50 is: 436,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,721.50 : 806,915.76 = 316,449.50 : x
  2. Step 2: Convert to fraction form
    584,721.50/806,915.76 = 316,449.50/x
  3. Step 3: Cross multiply
    584,721.50x = 806,915.76 × 316,449.50
  4. Step 4: Simplify right side
    584,721.50x = 255,348,088,794.12
  5. Step 5: Solve for x
    x = 255,348,088,794.12/584,721.50
  6. Step 6: Final answer
    x = 436,700.36

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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.