Home / 1,290,607.65-1,781,082.06-709,875.69

Finding the Fourth Proportional to 1,290,607.65, 1,781,082.06 and 709,875.69

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Solution

The fourth proportional to 1,290,607.65, 1,781,082.06 and 709,875.69 is: 979,652.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,607.65 : 1,781,082.06 = 709,875.69 : x
  2. Step 2: Convert to fraction form
    1,290,607.65/1,781,082.06 = 709,875.69/x
  3. Step 3: Cross multiply
    1,290,607.65x = 1,781,082.06 × 709,875.69
  4. Step 4: Simplify right side
    1,290,607.65x = 1,264,346,856,289.12
  5. Step 5: Solve for x
    x = 1,264,346,856,289.12/1,290,607.65
  6. Step 6: Final answer
    x = 979,652.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.