Home / 1,078,931.40-1,619,045.10-447,779.40

Finding the Fourth Proportional to 1,078,931.40, 1,619,045.10 and 447,779.40

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Solution

The fourth proportional to 1,078,931.40, 1,619,045.10 and 447,779.40 is: 671,938.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,931.40 : 1,619,045.10 = 447,779.40 : x
  2. Step 2: Convert to fraction form
    1,078,931.40/1,619,045.10 = 447,779.40/x
  3. Step 3: Cross multiply
    1,078,931.40x = 1,619,045.10 × 447,779.40
  4. Step 4: Simplify right side
    1,078,931.40x = 724,975,043,450.94
  5. Step 5: Solve for x
    x = 724,975,043,450.94/1,078,931.40
  6. Step 6: Final answer
    x = 671,938.03

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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.