Home / 926,431.40-1,389,647.10-912,434.60

Finding the Fourth Proportional to 926,431.40, 1,389,647.10 and 912,434.60

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Solution

The fourth proportional to 926,431.40, 1,389,647.10 and 912,434.60 is: 1,368,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,431.40 : 1,389,647.10 = 912,434.60 : x
  2. Step 2: Convert to fraction form
    926,431.40/1,389,647.10 = 912,434.60/x
  3. Step 3: Cross multiply
    926,431.40x = 1,389,647.10 × 912,434.60
  4. Step 4: Simplify right side
    926,431.40x = 1,267,962,095,829.66
  5. Step 5: Solve for x
    x = 1,267,962,095,829.66/926,431.40
  6. Step 6: Final answer
    x = 1,368,651.90

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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.