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Finding the Fourth Proportional to 584,859.40, 876,851.70 and 318,920.20

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Solution

The fourth proportional to 584,859.40, 876,851.70 and 318,920.20 is: 478,141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,859.40 : 876,851.70 = 318,920.20 : x
  2. Step 2: Convert to fraction form
    584,859.40/876,851.70 = 318,920.20/x
  3. Step 3: Cross multiply
    584,859.40x = 876,851.70 × 318,920.20
  4. Step 4: Simplify right side
    584,859.40x = 279,645,719,534.34
  5. Step 5: Solve for x
    x = 279,645,719,534.34/584,859.40
  6. Step 6: Final answer
    x = 478,141.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.