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Finding the Fourth Proportional to 1,316,271.94, 1,974,407.94 and 318,999.94

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Solution

The fourth proportional to 1,316,271.94, 1,974,407.94 and 318,999.94 is: 478,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,271.94 : 1,974,407.94 = 318,999.94 : x
  2. Step 2: Convert to fraction form
    1,316,271.94/1,974,407.94 = 318,999.94/x
  3. Step 3: Cross multiply
    1,316,271.94x = 1,974,407.94 × 318,999.94
  4. Step 4: Simplify right side
    1,316,271.94x = 629,836,009,459.50
  5. Step 5: Solve for x
    x = 629,836,009,459.50/1,316,271.94
  6. Step 6: Final answer
    x = 478,499.91

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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.