Home / 1,290,632.77-1,781,124.03-709,909.93

Finding the Fourth Proportional to 1,290,632.77, 1,781,124.03 and 709,909.93

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Solution

The fourth proportional to 1,290,632.77, 1,781,124.03 and 709,909.93 is: 979,703.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,632.77 : 1,781,124.03 = 709,909.93 : x
  2. Step 2: Convert to fraction form
    1,290,632.77/1,781,124.03 = 709,909.93/x
  3. Step 3: Cross multiply
    1,290,632.77x = 1,781,124.03 × 709,909.93
  4. Step 4: Simplify right side
    1,290,632.77x = 1,264,437,626,553.00
  5. Step 5: Solve for x
    x = 1,264,437,626,553.00/1,290,632.77
  6. Step 6: Final answer
    x = 979,703.65

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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.