Home / 1,248,379.30-1,869,400.95-686,779.30

Finding the Fourth Proportional to 1,248,379.30, 1,869,400.95 and 686,779.30

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Solution

The fourth proportional to 1,248,379.30, 1,869,400.95 and 686,779.30 is: 1,028,426.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,379.30 : 1,869,400.95 = 686,779.30 : x
  2. Step 2: Convert to fraction form
    1,248,379.30/1,869,400.95 = 686,779.30/x
  3. Step 3: Cross multiply
    1,248,379.30x = 1,869,400.95 × 686,779.30
  4. Step 4: Simplify right side
    1,248,379.30x = 1,283,865,875,860.34
  5. Step 5: Solve for x
    x = 1,283,865,875,860.34/1,248,379.30
  6. Step 6: Final answer
    x = 1,028,426.12

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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.