Home / 1,316,278.45-1,974,417.69-319,006.45

Finding the Fourth Proportional to 1,316,278.45, 1,974,417.69 and 319,006.45

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Solution

The fourth proportional to 1,316,278.45, 1,974,417.69 and 319,006.45 is: 478,509.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,278.45 : 1,974,417.69 = 319,006.45 : x
  2. Step 2: Convert to fraction form
    1,316,278.45/1,974,417.69 = 319,006.45/x
  3. Step 3: Cross multiply
    1,316,278.45x = 1,974,417.69 × 319,006.45
  4. Step 4: Simplify right side
    1,316,278.45x = 629,851,978,104.10
  5. Step 5: Solve for x
    x = 629,851,978,104.10/1,316,278.45
  6. Step 6: Final answer
    x = 478,509.68

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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.