Home / 1,290,662.29-1,781,157.23-709,909.98

Finding the Fourth Proportional to 1,290,662.29, 1,781,157.23 and 709,909.98

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Solution

The fourth proportional to 1,290,662.29, 1,781,157.23 and 709,909.98 is: 979,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,662.29 : 1,781,157.23 = 709,909.98 : x
  2. Step 2: Convert to fraction form
    1,290,662.29/1,781,157.23 = 709,909.98/x
  3. Step 3: Cross multiply
    1,290,662.29x = 1,781,157.23 × 709,909.98
  4. Step 4: Simplify right side
    1,290,662.29x = 1,264,461,293,526.16
  5. Step 5: Solve for x
    x = 1,264,461,293,526.16/1,290,662.29
  6. Step 6: Final answer
    x = 979,699.57

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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.